Smith, J.
These are consolidated appeals challenging orders of the Yakima County Superior Court authorizing the State to perform DNA blood tests on Appellants pursuant to RCW 43.43.754. The Court of Appeals, Division Three, certified the cases to this court pursuant to RCW 2.06.030. We accepted certification on August 7,1992. We affirm the orders of the trial court.
Statement of Facts
Each of the seven appellants (Joseph M. Olivas, Norman M. Skyles, Jorge V. Gallardo, Robert Ayala, Amoldo A. Alcaraz, Alejandro L. Cruz and Michael C. Briggs) (Appellants) entered pleas of "guilty" to the crimes charged or to reduced charges. In each case a blood sample was ordered for deoxyribonucleic acid (DNA) identification purposes pursuant to RCW 43.43.754.1 The record in each case contains no indication that blood or semen was passed during commission of the crimes, although in some cases their presence could be inferred. The record does not indicate whether Appellants were informed that a consequence of their guilty pleas was extraction of blood for DNA identification purposes.
State v. Joseph M. Olivas
Appellant Joseph M. Olivas was charged with first degree burglary and first degree assault in the Yakima County Superior Court. On April 17, 1991, he pleaded "guilty" to [77]*77second degree assault and was sentenced to 9 months' incarceration. The burglary count was dismissed. At the hearing the State requested the court to order a blood sample from Appellant Olivas to test for HIV (human immunodeficiency virus) pursuant to RCW 43.43.754 because this was a "violent offense". The Honorable Stephen M. Brown observed that such a blood test was not in order because there had been no physical contact and that it would be a waste of time and taxpayer money to perform the test. Judge Brown also questioned whether the language of the statute reflected the true intent of the Legislature. He indicated that he would not order the HIV blood test in the absence of a sound public policy requiring it.2
Nine days later, at a hearing on April 26, 1991, the State asked Judge Brown to order a blood sample from Mr. Olivas for DNA identification analysis pursuant to RCW 43.43.754 because second degree assault was a "violent offense", indicating that at the earlier hearing the parties had mistakenly believed that RCW 43.43.754 mandated HIV testing for this offense instead of DNA testing, and that the court had properly denied an HIV test because this was not a "sex offense". Appellant Olivas' counsel argued that no probable cause existed, that there was no need to gather any additional evidence which might serve to justify this type of warrant-less search and that the search would violate Mr. Olivas' constitutional rights. The State countered that following the procedures under the statute was not an unreasonable intrusion because the statute applied only to certain crimes and the procedure was analogous to fingerprinting. Judge Brown noted the constitutional challenge to the statute, but concluded that he would apply the statute as written. He signed an order directing DNA testing, but stayed it pending this appeal.3
[78]*78State v. Norman M. Skyles
On January 2,1991, Appellant Norman M. Skyles reported to the Selah Police that he believed he had molested his 8-year-old niece. After further investigation, he was charged in the Yakima County Superior Court with child molestation in the first degree.4
On March 15, 1991, Appellant Skyles pleaded "guilty" to indecent liberties before the Honorable Susan L. Hahn. On May 28,1991, he was sentenced to 36 months' incarceration by the Honorable Heather K Van Nuys. His counsel objected to the State's request for DNA testing as unconstitutional, arguing that there was no probable cause, that it constituted an illegal search, and that it was only being used to accumulate evidence against future uncommitted offenses. Counsel nevertheless stated that he had no objection to HIV testing. Judge Van Nuys observed that there was probable cause to require the test based upon Appellant Skyles' plea of "guilty". She then ordered the test, concluding that the search by DNA testing was no longer illegal. On May 29,1991, Appellant Skyles filed a notice of appeal from that order.5
State v. Jorge V. Gallardo
Appellant Jorge V. Gallardo was arrested on May 4, 1991, and subsequently charged in the Yakima County Superior Comí; with second degree assault. On June 27, 1991, he pleaded "guilty" to that charge before Judge Van Nuys and was sentenced to 9 months' incarceration. His counsel objected to the State's request for DNA testing as an unreasonable search and seizure, arguing that there was no probable cause to search for new evidence after the guilty plea, and that such evidence was only being accumulated for future criminal prosecutions. Judge Van Nuys equated DNA testing with mug shots and fingerprints. Appellant Gallar[79]*79do's counsel distinguished DNA testing as invasive and argued that while blood tests are considered searches under federal law, mug shots and fingerprints are not. Judge Van Nuys concluded that Mr. Gallardo's privacy rights were outweighed by the State's interest in future law enforcement, overruled the objection and ordered DNA testing. On July 2, 1991, Appellant Gallardo filed a notice of appeal from that order.6
State v. Robert Ayala
Appellant Robert Ayala was charged in the Yakima County Superior Court with attempted second degree rape arising out of an incident on March 24, 1991. On May 5, 1991, he pleaded "guilty" to that charge before Judge Pro Tempore Michael E. Schwab. On June 13, 1991, Mr. Ayala was sentenced to 36 months' incarceration by the Honorable Susan L. Hahn. She entered findings of fact and conclusions of law to justify an exceptional sentence below the standard range and ordered DNA testing. She found that there was no actual sexual contact between Mr. Ayala and the victim. Mr. Ayala's counsel objected to DNA testing as an unreasonable search, declaring that there was no probable cause to accumulate evidence for future uncommitted crimes, that blood samples are quite distinct from fingerprints and photographs, that DNA testing is not accepted nationwide as meeting the Frye test, and that a high rate of recidivism does not justify unreasonable searches. Judge Hahn acknowledged a distinction between fingerprints and DNA for identification, but concluded that the statute mandates DNA testing. She ordered the test. On June 25, 1991, Appellant Ayala filed a notice of appeal from that order.7
State v. Amoldo A. Alcaraz
Appellant Amoldo A Alcaraz was charged in the Yakima County Superior Court with first degree assault arising out [80]*80of an incident on March 26, 1991. On June 13, 1991, before Judge Hahn, he pleaded "guilty" to first degree assault and was sentenced to 3 months' incarceration. His counsel objected to the State's request for DNA testing, arguing that the court had already heard argument on the matter. Judge Hahn agreed, stating "I will incorporate your argument in the Ayala case by reference." She also incorporated her own and the State's responses in that case. She ordered DNA testing. On June 25,1991, Appellant Alcaraz filed a notice of appeal from that order.8
State v. Alejandro L. Cruz
Appellant Alejandro L. Cruz, age 18, was charged in the Yakima County Superior Court with second degree rape of a child arising out of an act of sexual intercourse with his 13-year-old girlfriend on June 6, 1991. On July 10, 1991, before Judge Van Nuys, he pleaded "guilty" to second degree child molestation and was sentenced to 15 months' incarceration. His counsel objected to the State's proposed order for DNA testing, asking the court to "incorporate our previous argument by reference to save time." Judge Van Nuys noted the objection, considered the prior arguments, ruled the statute constitutional and ordered DNA testing. On July 11, 1991, Appellant Cruz filed a notice of appeal from that order.9
State v. Michael C. Briggs
Appellant Michael C. Briggs was charged in the Yakima Comity Superior Court with first degree assault and first degree robbery arising out of a demand for money from an acquaintance and a stabbing on June 18, 1991. On July 10, 1991, before Judge Van Nuys, he pleaded "guilty" to first degree robbery and was sentenced to 70 months' incarceration. The other count was dismissed. Judge Van Nuys ordered DNA testing over objection of defense counsel. On July 11, [81]*811991, Appellant Briggs filed a notice of appeal from that order.10
All the appellants make only one assignment of error: that in each case the trial court erred by ordering a blood sample for DNA purposes pursuant to RCW 43.43.754.
Questions Presented
The questions presented by these consolidated cases are (1) whether the drawing of blood for DNA testing pursuant to RCW 43.43.754 constitutes an unreasonable search and seizure under the state and federal constitutions, (2) whether RCW 43.43.754 violates Appellants' right to due process under both constitutions, (3) whether RCW 43.43.754 violates Appellants' right to equal protection of the laws under both constitutions, and (4) whether Appellants' pleas of "guilty" were knowingly, intelligently and voluntarily made even though they were not told that a consequence of their pleas would be extraction of blood for DNA testing.11
Discussion
Constitutional Factors: State v. Gunwall12
In several recent cases where counsel has not thoroughly briefed and discussed state constitutional grounds indepen[82]*82dently of federal constitutional grounds, this court has declined to consider whether the Washington Constitution protects individual liberties beyond the protection afforded by the United States Constitution.13 We observed in State v. Gunwall, supra, that " 'naked castings into the constitutional sea are not sufficient to command judicial consideration and discussion.'"14
Under criteria announced in Gunwall, six nonexclusive factors must be briefed before this court will consider an independent state constitutional claim: (1) differences in the textual language of the applicable state and federal provisions; (2) significant differences in the texts of other parallel provisions of the two constitutions; (3) state constitutional and common law history and development; (4) state law preexisting declaration of the federal standard; (5) structural differences between the two constitutions; and (6) matters of state interest or local concern where there is no need for national uniformity.15
In this case Appellants claim that RCW 43.43.754 violates both the federal and state constitutions. However, they do not address the Gunwall factors. While they cite both federal and state constitutional provisions and cases, they do not analyze their separate development or structure. Nor do they explain why this court should make a distinction between federal and state constitutional rights. We therefore decline to consider independent state constitutional grounds.16
Search and Seizure
Appellants claim that each of the blood samples ordered drawn for DNA analysis constitutes an unconstitutional [83]*83warrantless search and seizure without probable cause. They argue that the Legislature lacked authority to enact the DNA testing statute, RCW 43.43.754.17 The State perceives this to be a challenge to both the HIV testing statute, RCW 70.24.340, and the DNA testing statute, RCW 43.43-.754, and defends both under the same analysis.18
Appellants argue that the United States Supreme Court has consistently held that requiring a person to provide blood or other bodily fluids to the State constitutes a search and seizure within the scope of the Fourth Amendment. They cite Schmerber v. California19 and Skinner v. Railway Labor Executives' Assn20 in support of their assertion that "it is obvious that this physical intrusion, penetrating beneath the skin, infringes an expectation of privacy that society is prepared to recognize as reasonable. The ensuing... analysis of the sample to obtain ... data is a further invasion of the tested [person's] privacy interests."21 The State acknowledges that non-consensual blood extraction constitutes a search.22
[84]*84Appellants claim that under Schmerber and Skinner the only remaining question in this case is whether the court-ordered searches for DNA pursuant to RCW 43.43.754 are supported by probable cause or individualized suspicion. They argue that because the statute specifically furthers the creation of a DNA data bank for future use and because each of them pleaded "guilty" to their present charges, there thus remains no other crime for which the State could have probable cause or individualized suspicion to justify searching them.23 Appellants further argue that some other states have required probable cause for extracting a defendant's blood.24 They also assert that the DNA testing statute, RCW 43.43-.754, violates article 1, section 7 of the Washington Constitution, which generally affords greater protection against warrantless searches and seizures than does the Fourth Amendment.25 They argue that Washington allows only five "narrow exceptions" to the general requirement for a search warrant: (1) consensual searches; (2) stop-and-frisk searches; (3) hot pursuit; (4) airport and courthouse searches; and (5) border searches,26 and that RCW 43.43.754 does not come within any of those five exceptions.27
Appellants also claim that RCW 43.43.754 does not provide a rational connection between its legislative purpose and the drawing of blood. They acknowledge that if the Legislature had attempted to establish a DNA data bank by use of evidence lawfully collected during investigation of their original charges, they might under that circumstance not then [85]*85have any constitutional grounds for objection. They argue, however, that under the statute as it is now written, DNA blood testing after judgment and sentence clearly violates the Washington Constitution because the sole purpose of the test is to accumulate evidence for prospective use in investigating crimes which have not been and may never be committed. They further argue that in the past this court has not permitted "the Legislature to make an 'end run' around the Fourth Amendment"28 by using evidencé obtained pursuant to an unconstitutionally vague "stop-and-identify statute."29 They argue that they should not be "stripped of constitutional protections [simply because] [they are] imprisoned for crime."30 They also argue that prisoners retain a constitutional expectation that their bodily integrity will be maintained and that RCW 43.43.754 is unconstitutional because it violates this expectation.31
The State claims that mandatory blood tests are constitutional searches, arguing that the Legislature found that a DNA bank would be a "rehable and accurate tool for the investigation and prosecution of sex offenses . . . and violent offenses".32
The State also claims that the DNA statute is a lawful exercise of the police power. It further argues that the statutory scheme is reasonably necessary for protection of the public health, safety, morals and general welfare because DNA testing is aimed at preventing and detecting crime; the statute is narrowly drawn and is substantially related to the evil sought to be cured; and the class of persons sought to be regulated — those convicted of violent offenses and sex offenses — is reasonably related to the legitimate object of the legislation.[86]*8633 The State also argues that the United States Supreme Court has concluded that testing of blood and urine for drug and alcohol content is constitutional where there is a compelling state interest34 or " 'special needs' beyond normal law enforcement that may justify departures from the usual warrant and probable-cause requirements."35
The State further argues that nonconsensual extractions of blood to test alcohol content were allowed in Schmerber v. California36 and State v. Curran37 as a permissible exception to the warrant requirement and as "a reasonable test performed in a reasonable manner."38 It argues that there is only one probable cause requirement for any such search and that the probable cause requirement in this case was satisfied when the arrest was made.39 It claims that, therefore, "the voluntariness of [the defendant's] consent is constitutionally irrelevant",40 and speculates that the "surprising absence" of cases regarding postconviction blood extractions is due to the fact that there is no constitutional jeopardy at this stage of the proceedings. The State cites a treatise to support its claim that collection of nontestimonial evidence such as photographs, fingerprints, voice identification, and blood samples does not implicate the right to counsel or the right against self-incrimination and should not be [87]*87excluded under the Fourth Amendment unless the person is being detained illegally.41 The State also cites several cases which conclude that the Fourth, Fifth, and Sixth Amendments are not implicated by collection of nontestimonial evidence.42 The State also argues that this court's approval of a warrantless collection of urine from prospective employees at a nuclear facility repudiates Appellants' argument that a search related to "future conduct" is unreasonable because prospective employees could not have already committed an act which would give probable cause for a search.43 Finally, the State purports to incorporate by reference the privacy discussion by the United States District Court in Jones v. Murray.44
Neither Appellants nor the State has adequately addressed the search and seizure issue as it has developed in the cases. Appellants and respondent agree that nonconsensual extractions of blood constitute searches under the Fourth and Fourteenth Amendments, citing Schmerber and Skinner. Those cases concluded that the searches were not unconstitutional even though they were conducted without warrants.
The Court reasoned in Schmerber v. California45 that there was sufficient probable cause to draw a blood sample from a person who was hospitalized immediately after an automobile collision and who evidenced the odor from ingestion of alcohol, and that the warrant requirement was excused because alcohol dissipates from the body and, under the cir[88]*88cumstances, "there was no time to seek out a magistrate and secure a warrant."
The State confuses the warrant requirement with the probable cause requirement when it asserts that the probable cause requirement was excused because the Court in Schmerber excused the warrant requirement. Contrary to that contention, the Court actually concluded that there was probable cause for the arrest, allowed the search as "an appropriate incident to petitioner's arrest", and excused the warrant requirement.46
The State also cites Schmerber for the proposition that the extraction of blood was "an appropriate incident to petitioner's arrest."47 It argues alternatively that probable cause was satisfied in this case because Appellants had already been arrested and the DNA testing was somehow "incident" to those arrests even though the blood samples were drawn months after the arrests. However, the State fails to note that in Schmerber the search was allowed without a warrant because there was probable cause to believe that evidence gathered in the search would aid in prosecuting the same crime for which probable cause existed in the first place. The blood samples from the searches in the cases now before us were not used to prevent or deter alcohol use by drivers nor to prosecute future uncommitted crimes. They were used solely for DNA identification of offenders after conviction and would not be considered "incident to arrest" under Schmerber.
In Skinner v. Railway Labor Executives' Ass'n48 the Court reasoned that when nonconsensual extractions of blood are performed without a warrant or individualized suspicion, the State must have " 'special needs' beyond normal law enforcement that may justify departures from the usual warrant and probable-cause requirements." In that case, the war[89]*89rantless collection of blood, breath and urine of railroad employees for drug and alcohol testing was held constitutional under a "special needs beyond normal law enforcement" analysis. The Court stated that the regulation requiring the testing was enacted "not to assist in the prosecution of employees, but rather [to further the government's 'special need'] 'to prevent accidents and casualties in railroad operations that result from impairment of employees by alcohol or drugs.' "49
Once the Court in Skinner found a "special need beyond normal law enforcement" for the blood testing, it concluded that the purpose of a warrant requirement is to protect privacy interests by assuring the person subject to a search that it is not a random or arbitrary act of government, that the intrusion is authorized by law and is narrowly limited, and that it provides a detached, neutral and objective determination by a magistrate that the intrusion is justified. The Court then declared that to require a warrant in that case would not further the traditional purposes of a warrant because of the standardized nature of the testing and the lack of facts for evaluation by a magistrate. The Court also cited Schmerber, stating that because drugs and alcohol dissipate from the body, requiring a warrant would frustrate the government's interest in the search. The Court also noted the government's reliance on private railroad companies to administer the tests as another reason for dispensing with a warrant.50
While a warrant, probable cause and individualized suspicion were not required, the Court in Skinner did require "special needs beyond normal law enforcement", a showing that the search and testing was reasonable and a showing that a warrant would be impractical and would frustrate the government's interest. Emphasis was placed on the urgency of action immediately following a train accident. Neither [90]*90Appellants nor the State addresses this "special needs" requirement. The State merely argues that the government has a compelling interest in DNA testing under the statute.
The State also cites National Treasury Employees Union v. Von Raab.51 Appellants do not cite it. In that case the Court allowed the government to test for drug use, without warrants or individualized suspicion, urine specimens of employees of the customs service. The Court cited the balancing factors in Skinner which weigh the privacy interests of persons subject to a search against the "special needs beyond normal law enforcement" of the government. The Court acknowledged the compelling interest of the government in deterring drug use among armed law enforcement officers who have responsibility for confiscating illegal drugs. The Court noted that the searches were not designed to serve the ordinary needs of law enforcement because, under the challenged statute, test results would not be used to prosecute employees; but instead the results would be used only to deter drug use among those eligible for promotion and to prevent promotion of employees who use drugs. The Court analyzed the goals and practicality of a warrant requirement and concluded that probable cause or individualized suspicion would not further those goals and would frustrate the government's efforts to deter drug use in the Customs Service. The Court also emphasized that Customs employees, as well as the railroad employees in Skinner, were aware that certain jobs required such testing.52 The Court required a compelling governmental interest which entailed a "special need beyond normal law enforcement" before dispensing with the warrant requirement.
None of those cases squarely applies to the facts in this case. In this case, the DNA blood tests are required after conviction. In Skinner and Von Raab the blood and urine tests were of persons who had not been charged with any offense. In this case, the statutory purpose of DNA testing is [91]*91explicitly for future identification and prosecution. The Court in Skinner and Von Raab clearly stated that the test results would not be used for prosecution, but only for deterrence of drug use.
The State claims that DNA testing is substantially similar to HIV testing and cites State v. Farmer53 for the proposition that compulsory testing "must be supported by a legitimate, compelling state interest" unless one of the statutory exceptions applies.54 The State incorrectly relies on Farmer because that case considered the First Amendment right to privacy which is not involved here. Under the Fourth Amendment search and seizure analysis, a reasonable expectation of privacy is considered.
The State also purports to incorporate by reference the entire privacy discussion in Jones v. Murray55 without further comment. Jones v. Murray, supra, is a 42 U.S.C. § 1983 challenge to a Virginia statute which requires DNA testing of all convicted felons. The United States Court of Appeals for the Fourth Circuit partially upheld the decision of the United States District Court for the Western District of Virginia which granted summary judgment to the State of Virginia, concluding that the statute is constitutional. The case was remanded on an ex post facto issue not argued by Appellants in this case.
Jones v. Murray, supra, is factually similar to this case. The relevant distinctions are that (1) the Washington statute only requires DNA testing of convicted sex offenders and violent offenders, while the Virginia statute requires DNA testing of all felons; and (2) in this case, all the Appellants were arrested and convicted after the effective date of the statute, while in Jones v. Murray, supra, some prisoners had ex post facto claims.
[92]*92Jones v. Murray, supra, is persuasive authority for the proposition that drawing of blood from convicted felons to establish a DNA data bank for use in future prosecution of recidivist acts does not violate the Fourth Amendment. The opinion of the District Court extended the "special needs" analysis to law enforcement, emphasizing that establishing a DNA data bank will be a deterrent to recidivist acts and therefore its purpose is not for "normal" law enforcement. The court cited two studies presented by the State of "Virginia which conclude (1) that approximately 62.5 percent of all felons studied were arrested for a felony or serious misdemeanor within 3 years of release and approximately 22.7 percent were arrested for a violent offense within 3 years of release and (2) that some DNA will be left at the scene by the perpetrator in approximately 30 percent of all violent crimes. The court concluded, therefore, that a DNA data bank would be a significant deterrent against recidivist activity.56 The Court of Appeals opinion declined to address the "special needs" analysis.57 Instead it referred to the limited privacy rights of convicted persons, citing the constitutionality of warrantless searches of the jail cells and the body cavities of prisoners, and the residences, belongings and persons of probationers. The court observed that DNA identification is tantamount to fingerprinting and photographing and that the limited right of privacy does not protect the identity of a convicted person. The court declared that the government had a law enforcement interest in knowing the identity of persons who commit crimes. It weighed the interest of the government against the limited privacy rights of convicted felons and the minor intrusion of a blood test and concluded that the DNA statute did not violate the Fourth Amendment.58
On the one hand, the United States Court of Appeals opinion in Jones v. Murray, supra, did not use the "special needs" [93]*93analysis to conclude that a state interest in law enforcement will justify drawing blood from convicted persons without probable cause or individualized suspicion.59 That opinion did not require the government to have a need "beyond normal law enforcement", but in not requiring it, the court diminished the privacy rights of convicted persons. On the other hand, the opinions of the District Court in Jones v. Murray, supra, and of the United States Supreme Court in Skinner and Von Raab allowed warrantless searches, but affirmed general privacy rights by requiring "special needs beyond normal law enforcement" for drawing blood from convicted persons without probable cause or individualized suspicion. We find this a better reasoned approach.
Due Process
The State argues that the due process issue has been resolved in Breithaupt v. Abram.60 In that case the United States Supreme Court concluded that "a blood test taken by a skilled technician is not such 'conduct that shocks the conscience,' nor such a method of obtaining evidence that it offends a 'sense of justice'."61 Those were the reasons the Court cited in Rochin v. California, 342 U.S. 165, 96 L. Ed. 183, 72 S. Ct. 205, 25 A.L.R.2d 1396 (1952) for concluding that stomach pumping without a warrant to obtain evidence violated due process.62 Under this due process analysis, the State is correct in asserting that Appellants must show that the procedure used in drawing their blood was unconstitutional and not, as Appellants claim, that the purpose for which their blood was drawn was unconstitutional.
Appellants claim that the DNA testing statute, RCW 43.43.754, is unconstitutionally vague on its face under due [94]*94process analysis. They acknowledge that they have the burden of persuasion and that a statute will not be declared unconstitutionally vague unless it appears unconstitutional beyond a reasonable doubt.63 But under Spokane v. Douglass, 115 Wn.2d 171, 795 P.2d 693 (1990), "[v]agueness challenges to enactments which do not involve First Amendment rights are to be evaluated in light of the particular facts of each case." Such enactments are not properly evaluated for facial vagueness, but rather as they were applied.64 Appellants' claims do not involve First Amendment rights. They have not established that the DNA testing statute is unconstitutionally vague beyond a reasonable doubt.
Equal Protection
Appellants claim that RCW 43.43.754 violates their constitutional right to equal protection of the laws. They cite State v. Phelan,65 stating that in equal protection analysis one of three recognized tests is used: (1) rational relationship, (2) strict scrutiny, or (3) intermediate scrutiny. They argue that drawing blood impinges on the "fundamental right" of all persons to be free from unlawful intrusion by the State and, therefore, either "strict scrutiny" or "intermediate scrutiny" must be applied to the DNA statute.66
Our first inquiry when an equal protection challenge is made is to identify the appropriate standard of judicial scrutiny.67 We then consider whether the statutory clas[95]*95sification is valid under the appropriate level of scrutiny.68 In State v. Coria69 we held that a statutory classification which implicates a liberty interest is not subject to the intermediate level of scrutiny unless the classification also affects a semisuspect class. No liberty interest is involved in this case, nor is a suspect or semisuspect class involved. Freedom from a blood test is not a fundamental right.70 Therefore, the rational basis test applies in this case.
"Equal protection of the laws under state and federal constitutions requires that persons similarly situated with respect to the legitimate purpose of the law receive like treatment."71 The DNA testing statute only applies to persons who have committed "sex offenses" or "violent offenses". The purpose of the statute is to investigate and prosecute sex offenses and violent offenses.72 There is a rational relationship between the interest of the government in law enforcement and the application of the statute to this class of persons.
Knowing, Intelligent and Voluntary Pleas
Appellants claim that they were not informed that a direct and immediate consequence of their pleas of "guilty" was that they must submit to DNA testing and that the evidence would be used against them in some future prosecution. They argue that it is a violation of due process to accept a plea of "guilty" without an affirmative showing that the plea
[96]*96was made knowingly, intelligently and voluntarily.73 The State claims that if a constitutional error occurred, it was harmless and was not prejudicial because the remedy would have been to formalize notice of the test procedure.74
Appellants argue that because the procedure is a search and because the evidence will be used in future prosecutions, it is a direct, and not a collateral, consequence of their pleas.75 They quote the test for distinguishing between direct and collateral consequences of pleas: the distinction "turns on whether the result represents a definite, immediate and largely automatic effect on the range of the defendant's punishment".76
The DNA statute mandates testing for all persons who fall within its purview. Its application is automatic. However, Appellants do not argue that they are being punished by the procedure itself. They confuse the procedure with the possible future consequences to them from use of evidence obtained from the testing. Possible future punishment is not a definite or immediate consequence of the testing.
Finally, Appellants cite revised CrR 4.2(g),77 which now provides that an accused person must be informed that a consequence of a plea of "guilty" for a sex offense or a violent [97]*97offense is DNA testing. They argue that they were not so informed.78 CrR 4.2(g) statement para. (6)(o) does not apply to Appellants because they entered their pleas of "guilty" prior to its effective date of September 1, 1991.
Where there is a claim of involuntariness of a plea, a procedure suggested by State v. Osborne79 as a solution under CrR 4.2(f) is for the court to allow withdrawal of the plea "whenever it appears that the withdrawal is necessary to correct a manifest injustice." None of Appellants have attempted to withdraw their pleas of "guilty" nor have they claimed that withdrawing their pleas is necessary to correct a manifest injustice.
The State is correct in its assertion that the fact that Appellants were not told that DNA testing would be required as part of their sentences does not make their otherwise knowing, intelligent and voluntary pleas void for violation of due process.80
Summary and Conclusion
The drawing of blood without a search warrant, probable cause or individualized suspicion has been allowed by federal and state cases. However, there are two distinct logical routes used by those courts to arrive at that conclusion. One route is to balance the limited privacy rights of convicted persons against a compelling governmental interest. The other route is to balance the general privacy right of persons to be free from unjustified governmental intrusion against [98]*98the "special needs beyond normal law enforcement" of the government. We conclude that the latter is the better reasoned approach.
In Breithaupt v. Abram, supra, the United States Supreme Court concluded that the procedure used to draw blood is so routine that it does not violate due process when properly conducted.81 Appellants do not claim that the procedures used in these cases were improperly conducted.
In Spokane v. Douglass, supra, this court concluded that a statute may be challenged facially only where there is a First Amendment right at issue, and that in all other circumstances only the application of the statute may be challenged.82 Appellants do not have a First Amendment claim. Their facial attack upon the DNA statute is not well made.
The DNA statute requires application only of the "rational relationship" test because no liberty interest, suspect or semi-suspect class, or fundamental right is involved in this case. Under equal protection analysis, there is a rational relationship between the DNA testing statute and law enforcement.
Appellants' pleas were knowingly, intelligently and voluntarily made despite the fact that they were not informed of required DNA testing prior to entering their pleas. Such a requirement is only a collateral consequence of their pleas.83 They may not claim the benefit of CrR 4.2(g) because it became effective after they entered their pleas.84
We conclude that the DNA statute, RCW 43.43.754, is constitutional as applied to the facts in the cases of Appellants Joseph M. Olivas, Norman M. Skyles, Jorge V. Gallardo, Robert Ayala, Amoldo A. Alcaraz, Alejandro L. Cruz and Michael C. Briggs.
[99]*99We therefore affirm the orders of the trial court directing DNA testing in each of these seven cases.
Andersen, C.J., and Brachtenbach, Dolliver, Durham, and Guy, JJ., concur.