ROSEN, D. J., delivered the opinion of the court, in which NORRIS, J., joined. CLAY, J. (pp. 479-84), delivered a separate concurring opinion.
[468]*468OPINION
ROSEN, District Judge.
Defendant/Appellant David Stafford appeals his 188-month sentence for possession with intent to distribute cocaine in violation of 21 U.S.C. § 841(a)(1), arguing that this sentence erroneously reflects an enhancement for “crack” cocaine. Yet, the substance in question was expressly and consistently referred to as crack cocaine both at the plea hearing and in the presen-tence investigation report, and Defendant never once challenged this characterization throughout the course of the proceedings in the court below. Accordingly, finding no basis to relieve Defendant of the consequences of his guilty plea, we affirm.
I. FACTUAL AND PROCEDURAL BACKGROUND
A. The Incident Leading to Defendant’s Indictment
An account of DefendanVAppellant David Stafford’s arrest is set forth in his Presentence Investigation Report, and this same account is incorporated without objection into Defendant’s brief on appeal. On March 24, 1998, at around 1:45 p.m., the Louisville police observed a motor vehicle traveling in excess of 60 miles per hour in a 35 mile per hour zone. The vehicle was being driven by Lois Dorsey, and Defendant was riding in the front passenger seat. As officers stopped the vehicle to investigate a traffic violation, Defendant exited the car with a white bag in his hand, and attempted to flee the scene on foot. During the ensuing chase, the officers observed Defendant throwing the bag away. Defendant was apprehended, and the bag was recovered. As discussed below, a laboratory analysis determined that the bag contained 235.42 grams of “cocaine freebase” and 14.48 grams of powder cocaine. {See Presen-tence Investigation Report at ¶ 5, J.A. at 41.)
B. Procedural Background
On August 3, 1998, Defendant was charged in a one-count indictment with possession with intent to distribute cocaine, in violation of 21 U.S.C. § 841(a)(1). The indictment did not specify drug quantities, nor did it refer to any of the penalty provisions set forth at 21 U.S.C. § 841(b)(1).1
Defendant was arraigned on December 30, 1998, and entered a guilty plea on March 8, 1999. In his plea agreement, Defendant acknowledged that he was charged with a violation of 21 U.S.C. § 841(a)(1), that he fully understood the nature and elements of the charged offense, and that this charge carried a “minimum term of imprisonment of 10 years, [and] a maximum term of life imprisonment.” (Plea Agreement at 1, J.A. at 9.) The plea agreement further stated that, at the time of sentencing, the Government would “recommend a sentence of imprisonment at the lowest end of the applicable [Sentencing] Guideline Range, but not less than any mandatory minimum term of imprisonment required by law,” and that the Government would stipulate to the quantity of drugs involved as being “235.42 grams cocaine-base and 14.48 grams powder cocaine.” {Id. at 3-4, J.A. at 11-12.)
At the March 8, 1999 change-of-plea hearing before District Judge Edward H. Johnstone, Assistant U.S. Attorney Monica Wheatley summarized the plea agreement as follows:
[469]*469In exchange for Mr. Stafford’s plea of guilty to the one-count indictment, which does charge an 841(a)(1) possession with intent to distribute count, the United States will be recommending the low end of the appropriate guideline range but not less than any mandatory minimum recommending three levels off for acceptance of responsibility, stipulating the quantity of drugs in this case is 235.42 grams of cocaine base, also known as crack, and 14.48 grams of cocaine powder....
(Plea Hearing Tr. at 2-3, J.A. at 27-28.) Both AUSA Wheatley and Defendant’s counsel, Jamie Haworth, confirmed that the plea agreement specified a minimum term of imprisonment of ten years, (id. at 3, J.A. at 28), and Defendant himself stated at two different points that he understood this, (id. at 4, 5, J.A. at 29, 30). The District Judge also informed Defendant that he faced a maximum term of life imprisonment. (Id. at 4, J.A. at 29.) Neither Defendant nor his counsel raised any objection to the Government’s characterization of the terms of the plea agreement.
When questioned as to the factual basis for his guilty plea, Defendant testified:
I was stopped by Louisville police. And when they stopped me, I had eight- and-a-half ounces of cocaine base and [a] half-ounce of powder cocaine in my possession. I was subdued by police and arrested.
(Id. at 5, J.A. at 30.) The Government’s counsel then stated that, “[h]ad the matter proceeded to trial, the officers would have testified ... about the cocaine being seized from Mr. Stafford as well as lab evidence to confirm the drugs are of the quantity and type that are stipulated in the plea agreement.” (Id. at 6, J.A. at 31.) Following all this, Defendant pled guilty, the District Court accepted this plea.
In advance of Defendant’s sentencing, U.S. Probation Officer Kathryn B. Jarvis prepared and filed a Presentence Investigation Report (“PSIR”). As part of her discussion of the relevant offense conduct, Probation Officer Jarvis recounted the results of a laboratory analysis of the white bag discarded by Defendant shortly before his arrest. As noted earlier, this analysis revealed that “the bag contained approximately 235.42 grams of cocaine freebase and 14.48 grams of powder cocaine.” (See PSIR at 1, J.A. at 41.) Based on this offense conduct, the Probation Officer determined that Defendant’s base offense level under the U.S. Sentencing Guidelines was 34, with a three-point reduction to 31 for acceptance of responsibility. (See id. at 2-3, J.A. at 42-43.) The PSIR explained the basis for this computation:
The guideline for a violation of 21 USC 841(a)(1) is found in Section 2D1.1 and directs that the offense level be determined by utilizing the Drug Quantity Table set forth in Subsection (c). As this case involves both powder cocaine and crack cocaine, each shall be converted to its marijuana equivalent to obtain a single offense level. The 235.42 grams of cocaine base (“crack”) have a marijuana equivalency of 4,708.4 kilograms. The 14.48 grams of powder cocaine have a marijuana equivalency of 2,896 grams (2.896 kilograms of marijuana). Therefore, the total quantity (marijuana equivalent) would be 4,711.296 kilograms of marijuana. Section 2Dl.l(e)(3) directs that for cases involving at least 3,000 kilograms but less than 10,000 kilograms of marijuana, the base offense level shall be 34.
(Id. at 2, J.A. at 42.)
The Probation Officer next found that Defendant’s lengthy record of prior arrests and convictions placed him in criminal history category VI. (See id. at 3-15, J.A. at [470]*47043-55.) These determinations of Defendant’s offense level and criminal history resulted in a Guidelines sentencing range of 188 to 235 months of imprisonment. (See id. at 18, J.A. at 58.) Probation Officer Jarvis also cited the statutory penalty provision at 21 U.S.C. § 841(b)(1)(A), and observed that it called for a “term of imprisonment [of] not less than ten years and up to life.” (Id. at 18, J.A. at 58.)
Defendant appeared for sentencing on April 21, 1999. Neither AUSA Wheatley nor Defendant’s counsel stated any objections to the PSIR, (see Sentencing Hearing Tr. at 2-3, J.A. at 34-35), and no objections were filed on Defendant’s behalf. Accordingly, the District Court adopted the uncontested factual findings and Guideline calculations set forth in the PSIR, and sentenced Defendant to 188 months of imprisonment, the low end of the sentencing range. (See id. at 3, J.A. at 35.) Defendant now appeals this sentence, arguing that it lacks a sufficient basis in fact.
II. ANALYSIS
A. The Standards Governing This Appeal
The sole issue before us is whether the District Court properly sentenced Defendant under the Sentencing Guideline provision governing crack cocaine, or whether, as Defendant contends, the Government failed to show that the “cocaine base” attributed to him in this case was, in fact, crack cocaine. As the above procedural recitation makes clear, Defendant never contested this drug type determination in the court below. Consequently, we review the District Court’s sentencing decision for plain error only. See United States v. Owusu, 199 F.3d 329, 339 (6th Cir.2000). This analysis has four components:
First, we are to consider whether an error occurred in the district court. Absent any error, our inquiry is at an end. However, if an error occurred, we then consider if the error was plain. If it is, then we proceed to inquire whether the plain error affects substantial rights. Finally, even if all three factors exist, we must then consider whether to exercise our discretionary power under [Fed. R.Crim.P.] 52(b), or in other words, we must decide whether the plain error affecting substantial rights affected the fairness, integrity or public reputation of judicial proceedings.
United States v. Thomas, 11 F.3d 620, 630 (6th Cir.1993), cert. denied, 511 U.S. 1043, 114 S.Ct. 1570, 128 L.Ed.2d 214 (1994).
B. The District Court Did Not Commit Plain Error in Sentencing Defendant in Accordance with the Sentencing Guidelines for Crack Cocaine.
The present appeal arises from the oft-noted 100-to-1 ratio found at 21 U.S.C. § 841(b)(1) and in the U.S. Sentencing Guidelines, through which a given quantity of one form of cocaine is equated, for sentencing purposes, to one hundred times this amount of cocaine in another form. For instance, federal drug law imposes the same range of penalties for drug offenses involving either (i) 50 grams of “a mixture or substance ... which contains cocaine base,” or (ii) one hundred times this amount, or 5 kilograms, of “cocaine.” See 21 U.S.C. §§ 841(b)(1)(A)(ii), (in). Likewise, the drug quantity table found at § 2Dl.l(c) of the Sentencing Guidelines establishes the same base offense level for 5 grams of “cocaine base” and 500 grams of “cocaine.” See U.S.S.G. § 2Dl.l(c)(7). Thus, the characterization of a substance as either “cocaine” or “cocaine base” can have a substantial effect at sentencing. The Government bears the burden of es[471]*471tablishing that the substance at issue in a given case is “cocaine base,” thereby triggering the higher sentencing range. See Owusu, 199 F.3d at 339.
To further complicate matters, the Sentencing Guidelines equate “cocaine base” with the street term “crack.” For example, a drug equivalency table which follows U.S.S.G. § 2D1.1 uses the terms “cocaine base” and “crack” interchangeably, and a note to the drug quantity table at § 2Dl.l(c) explains:
“Cocaine base,” for the purposes of this guideline, means “crack.” “Crack” is the street name for a form of cocaine base, usually prepared by processing cocaine hydrochloride and sodium bicarbonate, and usually appearing in a lumpy, rocklike form.
U.S.S.G. § 2Dl.l(c), note d. In adding this note to § 2Dl.l(c), the Sentencing Commission explained:
The amendment addresses an inter-circuit conflict. Compare, e.g., United States v. Shaw, 936 F.2d 412 (9th Cir.1991) (cocaine base means crack) with United States v. Jackson, 968 F.2d 158 (2d Cir.) (cocaine base has a scientific, chemical definition that is more inclusive than crack), cert. denied, 506 U.S. 1024, 113 S.Ct. 664, 121 L.Ed.2d 589 (1992). Under this amendment, forms of cocaine base other than crack {e.g., coca paste, an intermediate step in the processing of coca leaves into cocaine hydrochloride, scientifically is a base form of cocaine, but it is not crack) will be treated as cocaine.
U.S.S.G.App. C, amend. 487.2
Against this definitional backdrop, Defendant here argues that the Government has not met its burden of showing that the substance identified in a laboratory report as “cocaine freebase” was, in fact, “cocaine base” or “crack” within the meaning of U.S.S.G. § 2D1.1(c), as necessary to justify his 188-month sentence. If this substance does not qualify as “cocaine base” or “crack” under the Sentencing Guidelines, then the total amount of “cocaine” chargeable to Defendant, in both powder and “freebase” form, would be 249.90 grams. This, in turn, would result in a base offense level of 20, see U.S.S.G. § 2Dl.l(c)(10), and, with a three-level reduction for acceptance of responsibility and a category VI criminal history, would produce a sentencing range of 70 to 87 months of imprisonment. Under these circumstances, Defendant asserts that his 188-month sentence was the product of plain error.
We cannot agree that the District Court committed any sort of error, plain or otherwise. To accept Defendant’s argument to the contrary would require us to disregard the instances in which the substance [472]*472at issue was expressly characterized as “crack” in the proceedings below, and the consistent failure of Defendant or his counsel to raise any sort of objection to this terminology. First, at the March 8, 1999 change-of-plea hearing, the Government’s counsel summarized the plea agreement reached between the parties, including the Government’s agreement to stipulate that “the quantity of drugs in this case is 235.42 grams of cocaine base, also known as crack, and 14.48 grams of cocaine powder.” (Plea Hearing Tr. at 2-3, J.A. at 27-28 (emphasis added).) Neither Defendant nor his counsel voiced any objection to any part of this summary. Next, the PSIR expressly stated that “this case involves both powder cocaine and crack cocaine,” and that “[t]he 235.42 grams of cocaine base (‘crack’) have a marijuana equivalency of 4,708.4 kilograms.” (PSIR at 2, J.A. at 42 (emphasis added).) Again, neither Defendant nor his counsel objected to this (or any other) portion of the PSIR. To the contrary, defense counsel affirmatively represented at the April 21, 1999 sentencing hearing that Defendant had reviewed the PSIR and had no objections, and the District Court then proceeded to adopt its factual findings and application of the Sentencing Guidelines. (Sentencing Hearing Tr. at 2-3, J.A. at 34-35.)
Apart from these express references to crack cocaine, the record contains ample evidence that the Government intended to pursue a sentence under the statutory and Guideline provisions governing cocaine base or crack cocaine, and that Defendant was aware of this prosecutorial objective. Initially, we note the several statements in the record that Defendant faced a 10-year statutory minimum term of imprisonment.
Such declarations can be found (i) in Defendant’s plea agreement, which provided that the charged offense carried a “minimum term of imprisonment of 10 years, [and] a maximum term of life imprisonment,” (Plea Agreement at 1, J.A. at. 9); (ii) at Defendant’s change-of-plea hearing, during which defense counsel expressly confirmed that the plea agreement specified a minimum prison term of 10 years, and Defendant himself also stated on the record — twice, in fact — his understanding that he faced a 10-year minimum sentence, (Plea Hearing at 3-5, J.A. at 28-30); and (iii) in the PSIR, which stated that the applicable statutory penalty provision, 21 U.S.C. § 841(b)(1)(A), called for a “term of imprisonment [of] not less than ten years and up to life.” (PSIR at 18, J.A. at 58.)
These repeated references to a 10-year statutory minimum prison term take on particular significance when it is recalled that this 10-year minimum could only apply if Defendant’s drug offense involved “cocaine base” within the meaning of the federal drug statute. The total amount of cocaine chargeable to Defendant, in any form, was 249.90 grams. If this entire quantity were treated as cocaine, and not cocaine base, the enhanced penalties found at 21 U.S.C. §§ 841(b)(1)(A) and (B) — respectively, a 10-year and 5-year mandatory minimum term of imprisonment — would not apply, and Defendant instead would be subject to the penalties set forth at § 841(b)(1)(C). This latter provision, however, could not have been the source of the 10-year minimum referred to in the District Court proceedings, as it includes no statutory minimum term of imprisonment whatsoever,3 but imposes only a maximum sentence of “not more than 20 years.”4 21 [473]*473U.S.C. § 841(b)(1)(C). And, if there were any question as to the statutory penalty provision under which the prosecution sought to proceed, the PSIR expressly cites § 841(b)(1)(A) as the statutory source of the minimum (10 years) and maximum (life) terms of imprisonment to which Defendant was subject. (See PSIR at 18, J.A. at 58.) Thus, through repeated declarations that Defendant was subject to a 10-year minimum sentence, and through at least one express reference to § 841(b)(1)(A), the proceedings and papers in the court below left no room for doubt that the charged drug offense involved both cocaine and cocaine base, with the latter triggering the statutory 100-to-l disparity in sentencing consequences.
Similarly, the sentencing calculations in the PSIR confirmed that Defendant’s offense conduct triggered the Sentencing Guidelines’ 100-to-l quantity ratio for cases involving crack cocaine. As noted earlier, if it were otherwise, and if the charged offense in this case involved only cocaine and not crack, the base offense level for 249.90 grams of cocaine would have been 20. See U.S.S.G. § 2Dl.l(c)(10). Instead, the PSIR calculated a base offense level of 34, and explained that this was because “this case involves both powder cocaine and crack cocaine.” (PSIR at 2, J.A. at 42.) Once again, then, the sentencing calculations and disclosures in the PSIR were entirely consistent with the express statements, both in that document and elsewhere in the record, that the substances attributed to Defendant included both cocaine and crack cocaine.
Given all this, it would seem difficult for Defendant to credibly profess any uncertainty as to the nature of the offense to which he pled guilty, or as to the necessary consequences of this plea. Nevertheless, in arguing that the direct and indirect references in the record to cocaine base and crack cocaine are insufficient to sustain his sentence, Defendant refers us to the decisions in United States v. Garrett, 189 F.3d 610, 611-13 (7th Cir.1999), United States v. James, 78 F.3d 851, 855-58 (3d Cir.1996), Munoz-Realpe, supra, 21 F.3d at 377-79, and United States v. Johnson, 976 F.Supp. 284, 290-93 (D.Del.1997). In each of these cases, the court held that the Government had not sufficiently discharged its burden of establishing a factual basis for sentencing the defendant under the Sentencing Guidelines provisions pertaining to crack cocaine. Defendant argues that the same is true here, and that these prior decisions, under allegedly similar facts, compel the conclusion that Defendant’s sentence in this case was the product of plain error.
On inspection, however, we find three of these four cases readily distinguishable. Specifically, in James, Munoz-Realpe, and Johnson, the defendants vigorously contested the Government’s position that the charged offenses involved crack cocaine. See James, 78 F.3d at 856-57; Munoz-Realpe, 21 F.3d at 376; Johnson, 976 F.Supp. at 286-87, 290-93. Indeed, in at least two of these cases, the defendants offered extensive testimony and other evidence at sentencing to identify and distinguish the many forms of cocaine base, and to refute the Government’s contention that the substance at issue in the case was crack cocaine. See James, 78 F.3d at 856-57; Johnson, 976 F.Supp. at 286-93.5 In stark contrast, throughout the District [474]*474Court proceedings in the present case, Defendant never once challenged the Government’s characterization of the drugs in question as crack, nor did he proffer any evidence or testimony which might cast doubt on this proposition. To the contrary, Defendant and his counsel affirmatively accepted, without objection, the unambiguous references to crack cocaine in the PSIR. We recently distinguished James and Johnson on precisely this ground. See United States v. Williams, 176 F.3d 301, 309 (6th Cir.1999).
This leaves only the Seventh Circuit’s decision in Garrett, supra. To be sure, that case appears factually similar to this one, in that the defendant in Garrett, like Defendant here, failed to raise a challenge at his initial sentencing to statements — in that case, in an indictment, in a written stipulation, and at a plea hearing — -that the substance at issue was crack cocaine. See Garrett, 189 F.3d at 610-11. Nevertheless, the Seventh Circuit held that the defendant was not bound by his acquiescence, where the record was insufficient to demonstrate that the defendant’s admissions as to drug type were knowing and voluntary. 189 F.3d at 612. The Court noted that the defendant had been sentenced prior to its decision in United States v. Adams, 125 F.3d 586, 590 (7th Cir.1997), in which the Court had addressed the distinction in the Sentencing Guidelines between cocaine base and crack, and had cautioned that “such a severe difference in punishment deserves great care in application.” Because the District Court in Garrett “did not have the benefit of our decision in Adams,” and because “[t]he terms ‘cocaine base’ and ‘crack’ were used interchangeably by the parties and the court, indicating that, at the time, they may not have understood the legal differences between the two,” the Seventh Circuit remanded the matter for resentencing to ensure that any factual admissions by the defendant as to drug type were knowing and voluntary. Garrett, 189 F.3d at 612.
We decline to follow Garrett, finding it both factually distinguishable and unpersuasive in a portion of its reasoning. First, while the defendant in Garrett failed to object at his initial sentencing to the application of the enhanced penalty for crack cocaine, he did raise this objection at his first resentencing, following an earlier remand from the Seventh Circuit on a different issue. See Garrett, 189 F.3d at 611. Thus, in Garrett, unlike here, the defendant made his challenge before the District Court in the first instance. Moreover, as Defendant acknowledges, our decision in United States v. Jones, 159 F.3d 969, 981-83 (6th Cir.1998), thoroughly discussed the Sentencing Guidelines’ scheme of using “cocaine base” as a generic term and “crack” as a specific form of this substance, with only the latter subject to a 100-to-l quantity enhancement under § 2D1.1. Because we decided Jones the year before Defendant’s plea and sentencing, there is less cause for concern here that the District Court or Defendant might have been unaware of the significant sentencing ramifications flowing from the characterization of a drug as crack cocaine. Cf. United States v. Washington, 115 F.3d 1008, 1010 (D.C.Cir.1997) (finding that, in light of the Guideline amendments clarifying the scope of the term “cocaine base,” the use of that term in a PSIR created “only a very remote possibility of verbal confusion”).
Next, to the extent that Garrett advocates, in light of the Sentencing Guidelines’ 100-to-l quantity enhancement for crack cocaine, that courts should more carefully scrutinize a defendant’s factual admissions as to drug type versus other types of admissions, we decline to adopt this suggestion. A guilty plea typically involves a [475]*475whole host of factual admissions, with varying implications to a defendant’s sentence. To cite an obvious example, Defendant’s sentence in this case was significantly affected by his threshold admission that he possessed cocaine for the purpose of distribution. On top of this, a presen-tence report typically includes yet more factual assertions, each with an additional impact on the resulting sentencing range. Here, for instance, the calculation of Defendant’s sentencing range was affected by his history of prior arrests and convictions.
To be sure, a District Court generally must ensure that a defendant’s plea is knowing and voluntary, and that there is an adequate factual basis for this plea. In addition, a defendant must be given a full and fair opportunity to challenge the facts as set forth in a presentence report. We see no reason, however, to deem certain facts especially “important” in light of their sentencing implications, and to require that these facts be established to some greater degree of certainty, or that the defendant must express his specific understanding of the consequences of admitting these particular facts. Rather, we believe such a scheme would, in the words of the D.C. Circuit, “effectively create a duty for district court judges to ferret out, singlehandedly, every possible defect in fact or law in the presentence report.” Washington, supra, 115 F.3d at 1011. As Washington cogently observes, our system places that duty on the defendant and his counsel. 115 F.3d at 1011. This is especially true where, as here, the criminal defense bar has been amply apprised of the consequences that flow from the resolution of a particular factual issue.
We also find ourselves in agreement with the Government’s position, as stated in its brief on appeal, that the prosecution “has no burden to establish at sentencing a factual issue which is not in dispute.” (Gov’t Appeal Br. at 5.) Admittedly, the sole objective evidence in this case concerning drug type, the laboratory report, is not conclusive; it apparently refers, somewhat unhelpfully, to “cocaine freebase” and “powder cocaine,” and does not provide any further information as to drug form or purity. (PSIR at 1, J.A. at 41.) Yet, if Defendant had any basis for challenging the PSIR’s treatment of “cocaine freebase” as “crack” for purposes of applying the Sentencing Guidelines, the time and place to raise such an objection was at sentencing before the District Court. At that point, the Government could have, if necessary, submitted additional proof in support of its position that Defendant’s drug offense involved crack.6
Defendant, however, raised no such objection, either to the reference to crack at his change-of-plea hearing or to the use of this term in the PSIR. Neither did he challenge the sentencing range calculation in the PSIR, even though it was evident that this calculation was based on the 100-to—1 enhancement, under both the relevant federal statute and the Sentencing Guidelines, for offenses involving crack cocaine. Whether or not the District Court or the prosecution could have elicited a more affirmative statement from Defendant that his offense did, in fact, involve crack, and [476]*476whether or not the Government could have marshaled additional evidence to prove this uncontested fact, we find that Defendant’s silence in the face of repeated and consistent assertions of this fact rendered any such additional measures unnecessary. Indeed, we have previously recognized this principle, holding that a defendant’s statement of no objections to a presentence report constitutes “an express admission of the amount and type of drugs attributed to [the defendant] in the PSR.” United States v. Pruitt, 156 F.3d 638, 648 (6th Cir.1998). We adhere to this rule in this case, holding that Defendant’s failure to raise any sort of challenge in the proceedings below operates as an admission as to the drug types and quantities set forth in the PSIR, and thereby provides the requisite factual basis to sustain Defendant’s enhanced sentence for a drug offense involving crack cocaine.
Finally, at oral argument, Defendant suggested that the Supreme Court’s recent decision in Apprendi v. New Jersey, 530 U.S. 466, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000), undermines the validity of his sentence. We find Defendant’s appeal to Apprendi unavailing, for several reasons. First, it is true, as we recognized in United States v. Rebmann, 226 F.3d 521, 524-25 (6th Cir.2000), that Apprendi implicates the standard of proof in criminal cases, requiring that certain facts previously determined by the sentencing court under a “preponderance of the evidence” standard must now be proven beyond a reasonable doubt. Yet, Defendant’s factual admissions in this case obviate any possible concerns about the proper standard of proof. As noted, Defendant failed to present any evidence, objection, or argument before the District Court that might cast any doubt, reasonable or otherwise, on the Government’s assertion that his drug offense involved crack cocaine. Thus, a heightened standard of proof would not have altered the sentencing court’s resolution of this uncontested factual issue. See Apprendi, 120 S.Ct. at 2361 (distinguishing the Court’s prior ruling in Almendarez-Torres v. United States, 523 U.S. 224, 118 5.Ct. 1219, 140 L.Ed.2d 350 (1998), on the ground that the defendant in that case had admitted to the prior felony convictions used to enhance his sentence, so that “no question concerning ... the standard of proof that would apply to a contested issue of fact was before the Court” in that case); United States v. Harper, 246 F.3d 520, 530-31 (6th Cir.2001) (rejecting an Ap-prendi-based challenge to a sentencing court’s determination of drug quantity, where the defendant “stipulated to the amount of drugs for which he was held responsible, and the district court did not rely on any fact outside of the plea agreement to determine drug quantity at sentencing”).
Next, Defendant suggests that the indictment in this case fails to survive scrutiny under Apprendi, because it is silent as to type or quantity of cocaine. To be sure, certain language in Apprendi supports this proposition, such as the Court’s statement that, “under the Due Process Clause of the Fifth Amendment and the notice and jury trial guarantees of the Sixth Amendment, any fact (other than a prior conviction) that increases the maximum penalty for a crime must be charged in an indictment, submitted to a jury, and proven beyond a reasonable doubt.” Apprendi, 120 S.Ct. at 2355 (quoting Jones v. United States, 526 U.S. 227, 243 n. 6, 119 S.Ct. 1215, 1224 n. 6, 143 L.Ed.2d 311 (1999)).7 This has led some of our sister circuits to hold that, in order for the Government to seek an en[477]*477hanced penalty based on drag quantity, the amount of drags must be stated in the indictment. See, e.g., United States v. Fields, 242 F.3d 393, 396 (D.C.Cir.2001); United States v. Jones, 235 F.3d 1231, 1235-36 (10th Cir.2000); United States v. Rogers, 228 F.3d 1318, 1327 (11th Cir.2000).
We have yet to squarely address this issue, and we need not do so here.8 Under the standards governing this appeal, even if a purported defect in the indictment were deemed to rise to the level of plain error, we still would have to inquire whether this error “affects substantial rights.” See Thomas, supra, 11 F.3d at 630. Under similar circumstances, the First Circuit recently held that a defendant’s substantial rights were not affected by an indictment which lacked any reference to a specific amount of drugs, where the defendant had admitted to a quantity of drugs in a plea agreement. See United States v. Duarte, 246 F.3d 56, 62-64 (1st Cir.2001). The Court explained:
A guilty plea in a drug-trafficking case usually entails an admission anent the amount of drugs involved. For all intents and purposes, such an admission effectively resolves any doubts about drug quantity. In the ordinary case, we think that it will be difficult, if not impossible, for a defendant to show any cognizable prejudice in connection with a sentence based on a drug quantity that he has acknowledged, even though his sentence exceeds the statutory maximum for trafficking in unspecified amounts of those drugs.
This is such a case. As said, Duarte signed a plea agreement in which he unequivocally accepted responsibility for a specified amount of drugs (1,000 to 3,000 kilograms). This admission, which largely dictated the length of his sentence, took any issue about drag quantity out of the case. That being so, Duarte scarcely can claim to have been prejudiced either by the omission of specific drug quantities from the body of [478]*478the indictment or by the absence of a jury determination on the point.
246 F.3d at 62. The Court further observed that the maximum penalties set forth in the plea agreement, and the defendant’s acknowledgment in this agreement that his guilty plea exposed him to these maximum penalties, provided “fair warning” of the Government’s intention to seek a sentence beyond the default statutory maximum for an unspecified amount of drugs. 246 F.3d at 62-63.
In another case involving an Apprendi-based challenge to a guilty plea, the Eleventh Circuit likewise agreed that the defendant might well have satisfied the first two prongs of the plain error standard, but nevertheless concluded that no substantial rights were affected through this error. See United States v. Pease, 240 F.3d 938, 943-44 (11th Cir.2001). The Court found that the defendant’s admission as to drug quantity overcame any error in the omission of this information from the indictment:
Pease notes that the amount of cocaine involved in the offense was disputed at sentencing. However, Pease has never contended that he conspired to distribute less than 500 grams. In fact, in both his plea agreement and during the plea colloquy Pease admitted that he had accepted delivery of three kilograms of cocaine. Under 21 U.S.C. § 841(b)(1)(B), conspiracy to distribute this quantity of cocaine is punished with a statutory range of from five to forty years. Because the district court sentenced Pease to only thirty years, ten years less than the statutory maximum for conspiracy to distribute the quantity admitted, Pease cannot show that the error affects substantial rights.
240 F.3d at 944 (footnote and citations omitted).
The reasoning of Pease and Duarte applies with full force here. We already have found that Defendant effectively admitted the types and quantities of cocaine involved in the charged drug offense, both through his own affirmative statements, and by virtue of his failure to challenge the Government’s statements at the change-of-plea hearing and in the PSIR. Moreover, as in Duarte, Defendant here was repeatedly advised, both in the plea agreement and at the change-of-plea hearing, that a plea of guilty to this drug offense would expose him to a mandatory minimum 10-year term of imprisonment and a maximum term of life imprisonment, and the PSIR further emphasized this point by expressly citing the penalty provision at 21 U.S.C. § 841(b)(1)(A). Defendant’s 188-month sentence lies near the low end of this range, and well below the statutory maximum, leading to the conclusion, as held in Pease, that any alleged defect in the indictment did not affect Defendant’s substantial rights.
Indeed, even if we were to view the record as leaving some doubt about the forms of cocaine involved in this case, Defendant’s present challenge still would fail to satisfy the plain error standard. As this panel recently observed in .another case, a violation of the principles set forth in Apprendi rises to the level of “plain error” only where the defendant’s sentence exceeds the maximum possible sentence that could be imposed by statute absent the offending “sentencing factor” determined under the too-lenient “preponderance” standard. See United States v. Neuhausser, 241 F.3d 460, 464-66, 471-72 (6th Cir.2001); see also United States v. Munoz, 233 F.3d 410, 413-14 (6th Cir.2000) (finding that Apprendi was not applicable where “Defendant’s sentence did not exceed the statutory maximum for the portion of the indictment to which he validly [479]*479pled guilty”); United States v. Page, 232 F.3d 536, 543-45 (6th Cir.2000). For example, even if a determination of a particular drug quantity is improperly made under the “preponderance” standard, there is no plain error in a sentence that lies within the applicable statutory sentencing range for the same offense involving an indeterminate amount of drugs.
Such is the case here. Even if Defendant’s argument were accepted, and all of the cocaine attributed to him were treated as of “indeterminate” type, rather than some being in the form of crack cocaine, his sentence would then be determined by resort to 21 U.S.C. § 841(b)(1)(C), the “catchall” penalty provision for offenses involving cocaine. This statutory provision establishes a sentencing range of zero to 20 years of imprisonment. Defendant’s 188-month sentence does not exceed the statutory maximum of 20 years. Consequently, Apprendi does not assist Defendant in his effort to identify a plain error in his sentence.9
III. CONCLUSION
For the reasons set forth above, we AFFIRM Defendant’s 188-month sentence for possession with intent to distribute cocaine.