
594 N.W.2d 487 (1999)
460 Mich. 118
PEOPLE of the State of Michigan, Plaintiff-Appellant,
v.
Chad Marcus WAGER, Defendant-Appellee.
Docket No. 113712.
Supreme Court of Michigan.
June 15, 1999.
Jennifer M. Granholm, Attorney General, Thomas L. Casey, Solicitor General, James J. Gregart, Prosecuting Attorney, and Judith B. Ketchum, Assistant Prosecuting Attorney, Kalamazoo, for the people.
Butler, Durham & Willoughby (by Anthony R. Toweson), Parchment, for defendant-appellee.
Robert H. Cinabro, City Attorney, and A. Lee Kirk, Deputy City Attorney, *488 Kalamazoo, for amicus curiae, Michigan Municipal League.
Elwood L. Brown, President, David Gorcyca, Oakland County Prosecuting Attorney, and Marilyn J. Day, Assistant Prosecuting Attorney, Pontiac, for amicus curiae, Prosecuting Attorneys Association of Michigan.

Opinion
PER CURIAM.
The Court of Appeals reversed the defendant's conviction for operating a motor vehicle under the influence of intoxicating liquor. It did so on the ground that a blood test was not given within "a reasonable time" after the defendant's arrest, and therefore should have been suppressed. For the reasons stated in this opinion, we reverse the judgment of the Court of Appeals and reinstate the judgment of the circuit court.

I
On a September evening in 1995, the defendant was driving east on I-94 in Kalamazoo County. He had been drinking. At some point between 10:30 p.m. and 10:42 p.m., he collided with a truck that had stopped on the shoulder.[1] The driver of the truck was seriously injured.
The Kalamazoo County Sheriff Department was dispatched to the accident scene at approximately 10:45 p.m. The defendant was taken to Borgess Hospital, where a deputy administered a preliminary breath test at approximately 12:27 a.m. The test showed an alcohol level of .09 percent.
The deputy then requested that the defendant submit to a blood test, which was administered at approximately 12:50 a.m. Again, the result was an alcohol level of .09 percent.
The defendant was charged with a felony punishable by up to five years in prisonoperating a vehicle while under the influence of intoxicating liquor, causing the victim to suffer a serious impairment of a body function. MCL 257.625(5); MSA 9.2325(5).
The defendant moved to suppress the result of the blood test on the ground that it had not been given within a reasonable time after the defendant came into contact with the police. The circuit court considered the motion on the basis of a stipulation of facts, which included an agreement that the blood test came between 128 and 140 minutes after the offense (i.e., the traffic accident in which the victim was injured).
The circuit court denied the motion, and the case was tried before a jury. The defendant was convicted, and sentenced to a five-year term of probation. As a condition of the probation, the circuit court ordered the defendant to jail for fifteen days at the beginning of the probation.[2]
The defendant appealed, and the Court of Appeals reversed on the ground that the blood test was not given in timely fashion. 233 Mich.App. 1, 592 N.W.2d 389 (1998). Judge SMOLENSKI dissented.
The prosecuting attorney has applied to this Court for leave to appeal.[3]

II

A
Our Legislature has enacted several provisions governing the admissibility of *489 blood tests. In reviewing those provisions, we find a flat statement that "[t]he amount of alcohol ... in a driver's blood ... as shown by chemical analysis of the person's blood ... is admissible into evidence in any civil or criminal proceeding." MCL 257.625a(6)(a); MSA 9.2325(1)(6)(a).[4] Nowhere does the section impose a requirement concerning the interval of time in which the test must be given.[5]
The section further provides that the Department of State Police is to promulgate rules concerning the administration of tests under the section. MCL 257.625a(6)(g); MSA 9.2325(1)(6)(g). However, those rules are also silent with regard to a time requirement.[6]
To be clear, the Legislature is only stating a principle of admissibility. The parties are free to introduce "any other competent evidence" bearing on the question whether a driver was driving under the influence or otherwise in violation of this portion of the statute. MCL 257.625a(7); MSA 9.2325(1)(7).

B
Despite the absence of such a requirement in the statutory section, the Court of Appeals has developed the principle that a blood test is inadmissible unless given within "a reasonable time." People v. Kozar, 54 Mich.App. 503, 508, 221 N.W.2d 170 (1974); People v. Schwab, 173 Mich.App. 101, 433 N.W.2d 824 (1988).
Statements of this sort appear twice in Kozar. One is a footnote without citation of authority, which by its own terms is dictum:
These prerequisites [to admissibility], not at issue in the case at bar, include establishing the qualifications of the operator administering the test, the method or procedure followed in administering the test, that the test was performed within a reasonable time after the arrest, and the reliability of the testing device. Foundation testimony concerning these prerequisites must be introduced before the test results may be admitted into evidence. [54 Mich.App. at 509, n. 2, 221 N.W.2d 170.]
This statement that the proponent of test evidence must introduce testimony that the test was given with a reasonable time, as a prerequisite to admissibility, is unsupported by the text of the opinion in Kozar. The issue in that case was whether a prosecutor needed to introduce expert testimony to connect the test result to the time when a defendant is alleged to have been driving while under the influence of alcohol.
The Kozar footnote (54 Mich.App. at 509, n. 2, 221 N.W.2d 170) was quoted in People v. Krulikowski, 60 Mich.App. 28, 32, 230 N.W.2d 290 (1975), where the Court of Appeals reversed a conviction on the ground that one of the "prerequisites" to admissibility had not been shown. The footnote also was cited in People v. Schwab, supra at 103, 433 N.W.2d 824, where the Court of Appeals excluded Breathalyzer tests administered 122 and 133 minutes after a motorist was arrested.
The Schwab rule has been noted in subsequent decisions, including People v. Prelesnik, 219 Mich.App. 173, 180, 182-183, 555 N.W.2d 505 (1996), and People v. Sloan, 450 Mich. 160, 196-197, n. 11, 538 N.W.2d 380 (1995) (opinion of BOYLE, J.). See also Justice BOYLE'S dissent in People v. Patino, 447 Mich. 1008, 526 N.W.2d 916 (1994), in which she expressed concern that a "reasonable time" requirement would harden into a rule requiring that a test be given within a fixed period. Further, Schwab was noted in People v. Jacobsen, 448 Mich. 639, 641, 532 N.W.2d 838 *490 (1995), which arose in a similar factual context, but dealt with a different legal issue.
Looking at the origin of the rule as set forth in Kozar and the absence of a dispositive ruling on point from this Court, we are satisfied that no sound reason exists to engraft the "reasonable time" element onto the clear language of the statute.[7] Thus, to the extent that Kozar and its progeny adopt a "reasonable time" element, they are expressly overruled.

C
In the present case, the prosecution introduced evidence of the blood test to persuade the jury that the defendant was under the influence of intoxicating liquor at the time of the accident. The defense responded with the testimony of the expert whose deposition had been used in support of the motion to suppress.
The expert was a university professor who told the jury that, after a person drinks alcohol, the person's blood-alcohol level increases for a time, then plateaus, then decreases over a longer period of time. It was his belief that, in order to infer a person's blood-alcohol level from the result of a blood test administered later, it is necessary to undertake a "retrograde extrapolation."
In essence, the defense expert's testimony was that it is virtually impossible to infer blood-alcohol level from a later test. His "retrograde extrapolation" would require medical testing of the upper and lower gastrointestinal tracts, liver function tests, an analysis of recent food consumption, and other areas of inquiry. The defense expert indicated that there were "44 major variables we need to know" and that other considerations "can compound it over 200." Asked when a blood test should be performed to determine a person's blood alcohol level at 10:44, he responded, "At 10:44."
The jury listened to this testimony, and apparently reached a contrary conclusionthat a blood test given two hours after an event does have some usefulness in determining a person's state of intoxication at the earlier point.[8]
Reversing this defendant's conviction, the Court of Appeals characterized the defense expert's testimony as "uncontroverted." The majority stated:
The prosecution in this case failed to offer any evidence that the test results accurately reflected defendant's blood alcohol level at the time of the offense. The only expert testimony offered in the matter was that of defendant's expert,... whose uncontroverted testimony provided that the two-hour and eightminute or the two-hour and twenty-minute delay rendered the test results unreliable as an indicator of defendant's blood alcohol level at the time of the offense. Even given the trial court's rejection of the expert's testimony that the delay was unreasonable, there is no evidence on the record on which the court could base its decision that the test results were reliable and that the delay was therefore reasonable. Because the prosecution did not offer any evidence of reliability given the delay, *491 the prosecution failed to carry its burden of proof. See Krulikowski, supra at 33, 230 N.W.2d 290. [233 Mich.App. at 10, 592 N.W.2d 389.]
In that portion of its opinion, the Court of Appeals failed to apply clear statutory language. Pursuant to the express language of the statute, test results "are admissible ... and will be considered," M.C.L. § 257.625a(6)(b)(ii); MSA 9.2325(1)(6)(b)(ii), and the prosecutor is not required to introduce expert testimony on this issue. To the extent that the passage of time reduces the probative value of the test, the diminution goes to weight, not admissibility, and is for the parties to argue before the finder of fact.
For these reasons, we reverse the judgment of the Court of Appeals, and we reinstate the judgment of the circuit court. MCR 7.302(F)(1).
WEAVER, C.J., and BRICKLEY, TAYLOR, CORRIGAN, and YOUNG, JJ., concur.
MICHAEL F. CAVANAGH and MARILYN J. KELLY, JJ., concur only in the result.
NOTES
[1]  The prosecution and the defense disagree with regard to the manner in which the defendant was driving immediately before the accident, and with regard to whether the collision was caused by the defendant's driving or by a third motorist. That dispute is not pertinent to the issues raised in this appeal, however.
[2]  The order also requires thirty days of jail at the end of the probation, but the file indicates that the judge intended to review the defendant's progress, to determine whether to require him to serve the additional time.
[3]  We have also received two motions for leave to file briefs amicus curiae. We grant those motions.
[4]  In recent years, the statute often has been amended. However, the pertinent provisions remain the same as at the time of the events giving rise to this prosecution.
[5]  The admissibility of the blood test is noted in several other portions of the section, none of which includes a time element. MCL 257.625a(6)(b)(ii), (6)(d), (6)(e), (8); MSA 9.2325(1)(6)(b)(ii), (6)(d), (6)(e), (8).
[6]  See 1994 AACS, R 325.2651 et seq., and 1993 AACS, R 325.2671 et seq.
[7]  An anchoring principle of our jurisprudence, and the foremost rule of statutory construction, is that we are to effect the intent of the Legislature. In doing so, we begin with the language of the statuteif the Legislature has crafted a clear and unambiguous provision, we assume that the plain meaning was intended, and we enforce the statute as written. See People v. Venticinque, 459 Mich. 90, 99, 586 N.W.2d 732 (1998), Anzaldua v. Band, 457 Mich. 530, 534-535, 578 N.W.2d 306 (1998), McKenzie v. Auto Club Ins. Ass'n, 458 Mich. 214, 217, 580 N.W.2d 424 (1998), People v. Webb, 458 Mich. 265, 273-274, 580 N.W.2d 884 (1998), and a host of earlier decisions. [Rickner v. Frederick, 459 Mich. 371, 378, 590 N.W.2d 288 (1999).]
[8]  In relation to this point, it is helpful to remember the following definition:

"Relevant evidence" means evidence having any tendency to make the existence of any fact that is of consequence to the determination of the action more probable or less probable than it would be without the evidence. [MRE 401.]
