Berdon, J.
The principal issue in this appeal is whether the state constitution requires the police, while lawfully in custodial possession of a suspect’s clothing, to obtain a warrant before subjecting the clothing to a chemical analysis. The defendant, Wallace Joyce, was charged with two counts of arson in the first degree in violation of General Statutes § 53a-lll (a) (3) and (4), respectively.1 Prior to trial, he moved to suppress certain evidence, including the results of a chemical analysis of his clothing. Although the trial court granted the motion in part, the court refused to suppress the chemical analysis results. After a jury trial, the defendant was convicted of one count of arson in the first [12]*12degree in violation of § 53a-lll (a) (4) and acquitted of the charge under § 53a-lll (a) (3). He was sentenced to a term of imprisonment of twelve years, suspended after four years, fined $5000 and placed on five years probation. On the defendant’s appeal, the Appellate Court affirmed the conviction with one judge, Heiman, J., dissenting. State v. Joyce, 30 Conn. App. 164, 619 A.2d 872 (1993). We granted the defendant’s petition for certification.2 We conclude that the results of the chemical analysis should have been suppressed and therefore reverse the judgment of the Appellate Court.
The following evidence and findings, taken from the suppression hearing except as otherwise indicated, are relevant to the defendant’s appeal. On January 29, 1990, fire fighters and paramedics arrived at 125 Maple Street, East Haven, in response to a dispatch call reporting that there had been an explosion at that location. Emergency medical technician Charles Licata, en route to the scene, received a call to step up the priority because there was a patient in need of immediate medical treatment. When Licata arrived, the house at 125 Maple Street was on fire and the defendant was standing in a nearby river, waist deep in water. The defendant appeared to be severely burned. Licata helped the defendant out of the water and up onto an embankment. The defendant’s clothing was burned and smoldering and he had first, second and third degree burns over 42 percent of his body. His hands were degloved, meaning that the skin was intact but it was hanging off his hands. Licata cut all of the defendant’s clothing off in order to expose his injuries so that they could be cleaned and treated and placed the clothing [13]*13on the ground by the side of the road. Licata cleaned the defendant’s bums, placed him on a gurney, covered him with a sterile burn dressing, administered oxygen, and periodically wet down his body with a sterile saline solution. He then took the defendant to Yale-New Haven Hospital. In Licata’s opinion, based on his training and experience with burn victims, the defendant might have died had he not received immediate medical treatment and transportation to the hospital.
Licata and detective Paul Hemingway rode in the ambulance with the defendant to the hospital. Licata told Hemingway that the defendant’s clothing had been left by the roadside. En route to the hospital, Licata asked the defendant what had happened and the defendant responded that he had gone to his parents’ house to check on something. He had opened the door, and there had been an explosion. He was not sure if he had been blown out of the house, or if he had run out of the house to the river.
In the emergency room, Hemingway also asked the defendant what had happened, and the defendant repeated what he had told Licata. Hemingway then asked the defendant if he had a car. The defendant stated that he had a pickup truck, parked some distance away from the scene of the fire, at the Professional Building on Foxon Road in East Haven. Hemingway asked the defendant why the car was parked elsewhere, and the defendant responded that he had experienced mechanical problems. The conversation lasted only a minute, ending because the defendant, due to his condition, was no longer able to answer questions. Hemingway also spoke with the defendant’s wife. He told her that the police had the defendant’s burned clothing and wallet, and that she could pick them up at the police station.
[14]*14Detective Bruce Scobie took possession of the defendant’s clothing, which was lying in a pile on the street. Scobie and Hemingway took the wet items of clothing to the police department, and hung them up to dry. They also inventoried the contents of the defendant’s wallet. After the clothing had dried, it was tagged, placed in bags and stored at the police department. Scobie stated that his intention had been to return the clothing to its proper owner, and that he had been carrying out a customary procedure for safekeeping property, because “[i]f we left . . . [the items of clothing] lying in the street they [would] either be thrown out or stolen.” Both Scobie and Hemingway stated that the defendant had not been considered a suspect at these initial stages of the investigation. The trial court found that the police had taken custody of the defendant’s clothing pursuant to their community caretaking function. See State v. Tully, 166 Conn. 126, 136, 348 A.2d 603 (1974). Neither party challenges this finding on appeal.
Within a day, the defendant did become a suspect. On January 30, the day after the fire, Scobie gave the defendant’s clothing to fire marshall Frederick Brow. Brow immediately brought each item of clothing to the state forensic laboratory in Meriden for chemical testing, except for the defendant’s undershirt and dungarees, which he transported two days later. Brow did not obtain a warrant before ordering the chemical analysis of the clothing. The police did, however, apply for and obtain a warrant to seize the defendant’s pickup truck several days later.
Jack Hubball, the head of the chemistry section of the state forensic laboratory, employed gas chromatography analysis on each of the defendant’s items of clothing. At the defendant’s trial, Hubball testified concerning the nature of the test he had performed. In the first step of the procedure, Hubball heated the [15]*15garments individually to vaporize any organic material present. In the second step of the procedure, he ran the vapors through a column designed to separate the mixture of chemical compounds inside the vapor according to the differing boiling points of each compound. The machine produced a printout of a pattern that represented the compounds present in the vapor. In the final step of the procedure, Hubball compared the pattern with a library of known signature patterns of organic substances. The pattern on the defendant’s shirt, shoes, socks and jeans matched the known pattern for gasoline.3
The defendant argues that the chemical analysis of his clothing was the product of an illegal search and seizure under both the fourth amendment to the United States constitution4 and article first, § 7, of the constitution of Connecticut5 and therefore should have been suppressed. Since we agree with the defendant that the warrantless chemical analysis of the clothing constituted an unconstitutional search under article first, § 7, we need not reach the claim under the federal constitution.6 “It is well established that federal [16]*16constitutional and statutory law establishes a minimum national standard for the exercise of individual rights and does not inhibit state governments from affording higher levels of protection of such rights. . . . Cologne v. Westfarms Associates, 192 Conn. 48, 57, 469 A.2d 1201 (1984).” (Internal quotation marks omitted.) State v. Geisler, 222 Conn. 672, 684, 610 A.2d 1225 (1992).
The state argues, however, that we should not review the state constitutional issue because the defendant failed to provide a separate or distinct analysis under the state charter in the Appellate Court. We have made clear that under these circumstances we are not bound to review the state constitutional claim.7 See, e.g., State [17]*17v. Birch, 219 Conn. 743, 746 n.4, 594 A.2d 972 (1991). We have never held, however, that we are precluded from doing so. Under appropriate circumstances, review of state constitutional claims may be undertaken despite the failure of a defendant to brief the state constitutional issue in a prior appeal. State v. Geisler, 25 Conn. App. 282, 283-84 n.2, 594 A.2d 985 (1991), aff'd, 222 Conn. 672, 610 A.2d 1225 (1992). In the present case, the dissent in the Appellate Court was predicated in part on the state constitutional issue.8 We certified the issue for review under both the federal and state constitutions, and both parties accordingly briefed the state constitutional issue in this court. We conclude that, under the circumstances of this case, we may review the defendant’s article first, § 7 claim. See State v. Barrett, 205 Conn. 437, 445, 534 A.2d 219 (1987).9
[18]*18In determining whether the results of the chemical test of the defendant’s clothing should have been suppressed under the state exclusionary rule,10 as the product of a search11 that violated the state constitution, we employ the same analytical framework that would be used under the federal constitution.12 We must [19]*19determine (1) whether there was a reasonable expectation of privacy in the clothing, (2) whether the testing of the clothing at the state laboratory constituted a search, and (3) if so, whether the circumstances of this case fall within a recognized exception to the warrant requirement. For purposes of our analysis, we assume that the police had probable cause at the time of the chemical test to believe that the defendant started the fire.
We note initially that our determination of the constitutionality of the chemical testing of the defendant’s clothing is not meaningfully assisted by the express language of article first, § 7, other than the fact that the defendant’s clothing was a “possession” and therefore falls within the literal reach of the constitutional language. See State v. DeFusco, 224 Conn. 627, 635, 620 A.2d 746 (1993). Furthermore, under the circumstances of this case, our determination would not be assisted by a historical analysis of article first, § 7. “[W]e have, on occasion, employed a historical analysis of state constitutional provisions to aid in our determination of their content; see, e.g., State v. Oquendo, [223 Conn. 635, 650-52, 613 A.2d 1300 (1992)] (‘seizure’ under article first, §§ 7 and 9); State v. Barton, 219 Conn. 529, 538 n.4, 594 A.2d 917 (1991) (‘probable cause’ under article first, § 7) . . ." State v. DeFusco, supra, 635.
When interpreting the contours of our state charter of liberty, it is clear that we may look to federal prece[20]*20dent. State v. Geisler, supra, 222 Conn. 685; State v. Lamme, 216 Conn. 172, 184, 579 A.2d 484 (1990); see Michigan v. Long, 463 U.S. 1032, 1041, 103 S. Ct. 3469, 77 L. Ed. 2d 1201 (1983) (recognizing that in interpreting a state constitution, a state court may “rely on federal precedents as it would on the precedents of all other jurisdictions”). We employ this precedent for guidance and analogy when the federal authorities are “logically persuasive and well-reasoned.” W. Brennan, “State Constitutions and the Protection of Individual Rights,” 90 Harv. L. Rev. 489, 502 (1977) (“state court judges, and also practitioners, do well to scrutinize constitutional decisions by federal courts, for only if they are found to be logically persuasive and well-reasoned, paying due regard to precedent and the policies underlying specific constitutional guarantees, may they properly claim persuasive weight as guideposts when interpreting counterpart state guarantees”).
For the clothing to fall within the protection of article first, § 7, the defendant must have had a reasonable expectation of privacy. In order to meet this rule of standing; State v. Pittman, 209 Conn. 596, 600-601, 553 A.2d 155 (1989); a two-part subjective/objective test must be satisfied: (1) whether the owner or custodian of the clothing “manifested a subjective expectation of privacy with respect to it”; and (2) whether “that expectation [is] one that society would consider reasonable. . . .” State v. DeFusco, supra, 224 Conn. 633. This determination is made on a case-by-case basis. State v. Reddick, 207 Conn. 323, 331, 541 A.2d 1209 (1988). “Whether a defendant’s actual expectation of privacy ... is one that society is prepared to recognize as reasonable involves a fact-specific inquiry into all the relevant circumstances.” (Internal quotation marks omitted.) State v. Mooney, 218 Conn. 85, 94, 588 A.2d 145, cert. denied, 502 U.S. 919, 112 S. Ct. 330, 116 L. Ed. 2d 270 (1991).
[21]*21Our analysis commences with the concession by the state that generally there is a reasonable expectation of privacy in the clothes that one wears. The state does not claim that mere custody of the defendant’s property would entitle the police to search the property, and the law holds otherwise. State v. Miller, 227 Conn. 363, 386-87, 630 A.2d 1315 (1993); State v. Mooney, supra, 218 Conn. 100 (assuming that upon probable cause the police were entitled to seize belongings found under a bridge and preserve them while a proper search warrant was secured, we held that the warrantless search of the belongings violated the fourth amendment). Instead, the state argues that the defendant had no subjective expectation of privacy because his own conduct, in spilling gasoline on his clothing, manifested no intent to preserve a privacy interest in such incriminating evidence. The state cites no authority for this novel proposition. We simply note that article first, § 7, of the state constitution serves to protect the privacy rights of every citizen, not just those who are intentionally concealing evidence of crimes. Compare Arizona v. Hicks, 480 U.S. 321, 324-25, 107 S. Ct. 1149, 94 L. Ed. 2d 347 (1987) (holding that the mere act of moving a piece of stereo equipment to expose its serial number ‘‘produce [d] a[n] . . . invasion of respondent’s privacy” in violation of the fourth amendment without any suggestion that the defendant intentionally concealed the serial number from view). We conclude that the defendant adequately exhibited his subjective expectation of privacy, as he “merely left his property behind him, more or less of necessity, making no attempt, however, to discard it or disassociate it from himself.”13 State [22]*22v. Philbrick, 436 A.2d 844, 855 (Me. 1981), on appeal after remand, 481 A.2d 488 (Me. 1984) (no abandonment found where injured defendant left his knapsack by side of road, hitchhiked to police station, and then told police that pack belonged to him).
The state also argues that because the gasoline spill resulted in the emission of a detectable odor, the defendant’s expectation of privacy was objectively unreasonable. The state analogizes the gasoline spill to a coffee stain on clothing that comes within the plain view of the police. The state’s analogy is misplaced. The record contains no evidence that the defendant’s clothing did in fact emit any odor detectable by the human sense of smell.14
[23]*23The dissent asserts, however, that the defendant’s reasonable expectation of privacy is diminished by the fact that the clothing was damaged by the fire. Although the items of clothing tested at the state laboratory were unusable as clothing and reduced to rags, they were still the defendant’s rags.15 Compare State v. Zindros, 189 Conn. 228, 238-40, 456 A.2d 288 (1983), cert. denied, 465 U.S. 1012, 104 S. Ct. 1014, 79 L. Ed. 2d 244 (1984) (under fourth amendment of United States constitution, and article first, § 7, of Connecticut constitution, defendant retained reasonable expectation of privacy in burned out and boarded up building containing damaged personal property). Under all the circumstances of this case, we conclude that the defendant’s expectation of privacy was a reasonable one under article first, § 7, of the state constitution.
The next issue to be decided under our state constitution is whether the testing of the clothing at the state laboratory constituted a search. In the first instance, the answer to the question of whether the chemical testing of the clothing constituted a search borders on the obvious. Furthermore, the question has largely been answered by our determination that the defendant had a reasonable expectation of privacy in the invisible and odorless chemicals present in his clothing. See United States v. Jacobsen, 466 U.S. 109, 122, 104 S. Ct. 1652, 80 L. Ed. 2d 85 (1984) (“[w]e must first determine whether [official conduct] can be considered a 'search’ subject to the Fourth Amendment—did it infringe an [24]*24expectation of privacy that society is prepared to consider reasonable”). Moreover, as previously noted, the testimony of the expert witness Hubball indicates that government conduct invaded the defendant’s reasonable expectation of privacy through the use of a machine designed to detect the presence and identity of many organic compounds by heating clothing items and analyzing the resultant vapors. We conclude that this chemical test, capable of determining a multitude of private facts about an individual,16 constituted a search under article first, § 7, of the state constitution.17
The state finally claims that if there was a search, it was not unreasonable and therefore passes constitutional muster. Under the state constitution, all warrant-less searches, whether or not the police have probable cause to believe that a crime was committed, are per [25]*25se unreasonable, unless they fall within one of a few specifically established and well delineated exceptions to the warrant requirement. State v. Blades, 225 Conn. 609, 617, 626 A.2d 273 (1993).
In State v. Miller, supra, 227 Conn. 363, we recently explained the reasoning underlying the warrant requirement. “Our [state] constitutional preference for warrants reflects a goal of protecting citizens from unjustified police intrusions by interposing a neutral decisionmaker between the police and the object of the proposed search. See State v. Diaz, [226 Conn. 514, 628 A.2d 567 (1993)]; cf. State v. Jackson, 162 Conn. 440, 444, 294 A.2d 517, cert. denied, 409 U.S. 870, 93 S. Ct. 198, 34 L. Ed. 2d 121 (1972) (purpose of fourth amendment is to require neutral and detached magistrate to make probable cause determination). Accordingly, a search is invalid if the police, without a justification rooted in a valid exception to the warrant requirement, have relied upon only their own probable cause evaluation, even if later found to be correct, before searching. We thus read the two clauses of article first, § 7, in conjunction—a warrantless search is per se unreasonable, justified only by limited exceptions—rather than in disjunction—a search is valid if it is reasonable, and the presence of a warrant is just one factor in the determination of reasonableness. Cf., e.g., State v. Badgett, 200 Conn. 412, 423, 512 A.2d 160, cert. denied, 479 U.S. 940, 107 S. Ct. 423, 93 L. Ed. 2d 373 (1986) (construing fourth amendment to bar warrantless searches as per se unreasonable); see generally State v. Larocco, 794 P.2d 460, 467-69 (Utah 1990) (extensive discussion of the consequences of reading the two clauses of the fourth amendment in conjunction and in disjunction); R. Bloom, ‘Warrant Requirement—The Burger Court Approach,’ 53 U. Colo. L. Rev. 691 (1982).
[26]*26“Our constitutional preference for warrants is overcome only in specific and limited circumstances. See, e.g., State v. Geisler, supra, [222 Conn.] 691 (recognizing emergency exception as matter of state constitutional law); State v. Delossantos, 211 Conn. 258, 266-67, 559 A.2d 164, cert. denied, 493 U.S. 866, 110 S. Ct. 188, 107 L. Ed. 2d 142 (1989) (recognizing exception for search incident to arrest as matter of state constitutional law); State v. Dukes, [209 Conn. 98, 126, 547 A.2d 10 (1988)] (recognizing automobile exception on the highway as a matter of state constitutional law). These recognized exceptions derive primarily from acknowledged interests in protecting the safety of the police and the public and in preserving evidence.” State v. Miller, supra, 227 Conn. 382-83.
In Miller, as in the present case, the police had possession of the defendant’s property—that is, a car that had been towed and impounded following the arrest of the defendant—and the defendant did not challenge the constitutionality of the method by which the police had gained possession of the car. Id., 368. The police searched the impounded car without obtaining a warrant, and found a .357 Smith and Wesson revolver in the trunk. Id. The defendant was subsequently convicted of criminal possession of a weapon upon this evidence. Id. Under our state constitution, we refused to expand the automobile exception18 to the warrant requirement to include a warrantless search at the police station while the automobile is in lawful custody. We held that “[i]n light of our demonstrated constitutional preference for warrants and our concomitant obligation narrowly to circumscribe exceptions to the state constitutional warrant requirement, we conclude [27]*27that a warrantless automobile search supported by probable cause, but conducted after the automobile has been impounded at the police station, violates article first, § 7, of the Connecticut constitution.” Id., 386-87.
The circumstances of the search in the present case present an even more compelling case for requiring a warrant than those of State v. Miller, supra, 227 Conn. 363. In Miller, the state argued for the expansion of a recognized exception to the warrant requirement under the state constitution, the automobile exception. In the present case, the state is unable to identify any exception to the warrant requirement that could encompass the warrantless search of the defendant’s clothes.19 Our concern for the right to personal privacy and our preference for the warrant to protect that privacy was recently underscored when we pointed out that even if the police act without a warrant under the emergency exception, once that emergency ceases to exist, the police must terminate their intrusive conduct. State v. Geisler, supra, 222 Conn. 695-96. Accordingly, we conclude that the chemical analysis of the defendant’s clothing should have been suppressed as the result of a warrantless search unsupported by exigent circumstances or any other recognized exception to the warrant requirement.
The judgment of the Appellate Court is reversed and the case is remanded to that court with direction to [28]*28reverse the judgment of the trial court and remand the case to that court for a new trial on the count of arson in the first degree.
In this opinion, Peters, C. J., Borden, Norcott and Katz, Js., concurred.