¶1 — William Hultenschmidt appeals his conviction of vehicular homicide, arguing that the trial court erred in admitting a blood sample analysis, excluding a computer-generated animation recreating the accident, and instructing the jury. We reverse and remand.
Houghton, J.
FACTS
¶2 Melvin Sanders’ Buick LeSabre struck Hultenschmidt’s Oldsmobile Cutlass Ciera on the passenger side. Hultenschmidt’s passenger, Sandra Madera, died as a result of the accident.
[261]*261¶3 Port Angeles Police Officer Tyler Peninger investigated the collision. When he arrived at the scene, Peninger could smell alcohol in the area where Hultenschmidt bent over Madera. Peninger spoke with Hultenschmidt who initially denied that he had been drinking, but later admitted that had consumed two to three vodka collins drinks.
¶4 Peninger took Hultenschmidt to Olympic Medical Center to draw blood for alcohol concentration analysis. A technician drew two gray-topped tubes of blood, sealed them with green tape, and gave the tubes to Peninger. Peninger took the tubes to the police department and packaged them for shipment to the Washington State Patrol Crime Laboratory (crime lab).
¶5 After the crime lab analysis revealed a 0.19 blood alcohol content,1 the State charged Hultenschmidt with vehicular homicide2 and vehicular assault.3 A jury heard the matter.
¶6 At trial, Estuardo Miranda, a crime lab toxicologist, testified about the blood sample evidence and crime lab procedure. Miranda set forth his qualifications, training, education and experience and responded, “Yes,” when asked if he had “any permits issued by the State toxicologist.” Report of Proceedings (RP) (May 13, 2002) at 105.
¶7 Miranda explained that he signed for and opened the box containing Hultenschmidt’s blood samples. The box held two gray-topped tubes with intact seals. According to the verbatim report of trial proceedings, Miranda testified that laboratory protocol “suggests” that samples contain “anticoagulant in a preservative, sodium chloride [sic] or [262]*262potoxinoxolate [sic]”4 and that the “tubes that contain those chemicals to preserve the blood are characterized by having a gray top and that’s what seals the tube.” RP (May 13, 2002) at 107. He further testified that sealed gray-topped blood sample tubes contain those chemicals.
¶8 When asked about how blood samples are preserved, he explained that “[w]e suggest that they are—that we receive samples containing anticoagulant in a preservative, sodium chloride [sic] or potoxinoxolate [sic]. The tubes that contain those chemicals to preserve the blood are characterized by having a gray top and that’s what seals the tube.” RP (May 13, 2002) at 107. Miranda testified that “potoxinoxolate [sic] and sodium chloride [sic]” are common anticoagulants. RP (May 13, 2002) at 107. In response to the State asking whether an enzyme poison is required to preserve a blood sample from a human being for blood alcohol analysis, he replied, “[i]t is not required.” RP (May 13, 2002) at 108. The State asked Miranda if “anything else other than an anticoagulant [is] needed to preserve the ethicacy [sic] of a blood sample?” RP (May 13, 2002) at 108. Miranda responded, “No.” RP (May 13, 2002) at 108. Finally, Miranda testified that the sample had not coagulated when he received it.
¶9 Defense counsel asked to voir dire Miranda. Because no question was before the witness, the trial court denied the motion. Defense counsel objected to introducing the blood test results based on lack of foundation. He argued that the crime lab failed to follow proper sample preservation procedures and Miranda did not have a proper state toxicology permit. The court overruled the objection, stating that the objection went to weight of the evidence not to its admissibility.
¶10 Also at trial, Hultenschmidt sought to introduce a computer-generated animation through his accident reconstruction expert. The expert prepared a video animation [263]*263comprising six segments, three depicting the collision with the Sanders vehicle traveling its actual speed, and three depicting the accident with the Sanders vehicle traveling the 25 mph posted speed limit instead of 47.5 mph.5 The animations showed that when Sanders’ vehicle traveled at 25 m.p.h., the accident would not have occurred.
¶11 The court ruled that the three segments depicting the Sanders vehicle traveling 25 mph lacked foundation and were not admissible. For the same reason, the court refused to allow Hultenschmidt’s expert to testify that the collision would not have occurred had Sanders been observing the posted speed limit.
¶12 The jury convicted Hultenschmidt of vehicular homicide and he appeals.
ANALYSIS
Blood Alcohol Sample
¶13 Hultenschmidt first contends that the trial court erred in admitting the blood test results because the State failed to present a prima facie case that the blood sample lab analysis complied with statutory and regulatory provisions. Hultenschmidt raises several evidentiary arguments regarding his blood sample preservation, all stemming from this same premise: that the State failed to show that the blood test conformed with WAC 448-14-020(3)(a) and (b).
¶14 Specifically, Hultenschmidt argues that the court should not have admitted the blood test results because the State made no showing that enzyme poison was present in his blood sample, his blood sample was placed in a chemically clean and dry container, his sample was immediately and appropriately sealed with an inert and leak-proof stopper, or the toxicologist possessed a valid permit for performing blood alcohol tests.
[264]*264f 15 We review a trial court’s evidentiary rulings for abuse of discretion. State v. Stubsjoen, 48 Wn. App. 139, 147, 738 P.2d 306, review denied, 108 Wn.2d 1033 (1987). A court abuses its discretion when it exercises it on untenable grounds or for untenable reasons. State ex rel. Carroll v. Junker, 79 Wn.2d 12, 26, 482 P.2d 775 (1971).
¶16 Our analysis involves interpreting the interplay among various statutes and regulations concerning driving under the influence of intoxicating liquor or drugs and vehicular homicide. RCW 46.61.520(l)(a). Here, the jury convicted Hultenschmidt under the vehicular homicide statute, which provides that:
[T]he driver is guilty of vehicular homicide if the driver was operating a motor vehicle:
(a) While under the influence of intoxicating liquor or any drug as defined by RCW 46.61.502.
RCW 46.61.520(1).
¶17 The vehicular homicide statute refers us to RCW 46.61.502, which provides that:
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¶1 — William Hultenschmidt appeals his conviction of vehicular homicide, arguing that the trial court erred in admitting a blood sample analysis, excluding a computer-generated animation recreating the accident, and instructing the jury. We reverse and remand.
Houghton, J.
FACTS
¶2 Melvin Sanders’ Buick LeSabre struck Hultenschmidt’s Oldsmobile Cutlass Ciera on the passenger side. Hultenschmidt’s passenger, Sandra Madera, died as a result of the accident.
[261]*261¶3 Port Angeles Police Officer Tyler Peninger investigated the collision. When he arrived at the scene, Peninger could smell alcohol in the area where Hultenschmidt bent over Madera. Peninger spoke with Hultenschmidt who initially denied that he had been drinking, but later admitted that had consumed two to three vodka collins drinks.
¶4 Peninger took Hultenschmidt to Olympic Medical Center to draw blood for alcohol concentration analysis. A technician drew two gray-topped tubes of blood, sealed them with green tape, and gave the tubes to Peninger. Peninger took the tubes to the police department and packaged them for shipment to the Washington State Patrol Crime Laboratory (crime lab).
¶5 After the crime lab analysis revealed a 0.19 blood alcohol content,1 the State charged Hultenschmidt with vehicular homicide2 and vehicular assault.3 A jury heard the matter.
¶6 At trial, Estuardo Miranda, a crime lab toxicologist, testified about the blood sample evidence and crime lab procedure. Miranda set forth his qualifications, training, education and experience and responded, “Yes,” when asked if he had “any permits issued by the State toxicologist.” Report of Proceedings (RP) (May 13, 2002) at 105.
¶7 Miranda explained that he signed for and opened the box containing Hultenschmidt’s blood samples. The box held two gray-topped tubes with intact seals. According to the verbatim report of trial proceedings, Miranda testified that laboratory protocol “suggests” that samples contain “anticoagulant in a preservative, sodium chloride [sic] or [262]*262potoxinoxolate [sic]”4 and that the “tubes that contain those chemicals to preserve the blood are characterized by having a gray top and that’s what seals the tube.” RP (May 13, 2002) at 107. He further testified that sealed gray-topped blood sample tubes contain those chemicals.
¶8 When asked about how blood samples are preserved, he explained that “[w]e suggest that they are—that we receive samples containing anticoagulant in a preservative, sodium chloride [sic] or potoxinoxolate [sic]. The tubes that contain those chemicals to preserve the blood are characterized by having a gray top and that’s what seals the tube.” RP (May 13, 2002) at 107. Miranda testified that “potoxinoxolate [sic] and sodium chloride [sic]” are common anticoagulants. RP (May 13, 2002) at 107. In response to the State asking whether an enzyme poison is required to preserve a blood sample from a human being for blood alcohol analysis, he replied, “[i]t is not required.” RP (May 13, 2002) at 108. The State asked Miranda if “anything else other than an anticoagulant [is] needed to preserve the ethicacy [sic] of a blood sample?” RP (May 13, 2002) at 108. Miranda responded, “No.” RP (May 13, 2002) at 108. Finally, Miranda testified that the sample had not coagulated when he received it.
¶9 Defense counsel asked to voir dire Miranda. Because no question was before the witness, the trial court denied the motion. Defense counsel objected to introducing the blood test results based on lack of foundation. He argued that the crime lab failed to follow proper sample preservation procedures and Miranda did not have a proper state toxicology permit. The court overruled the objection, stating that the objection went to weight of the evidence not to its admissibility.
¶10 Also at trial, Hultenschmidt sought to introduce a computer-generated animation through his accident reconstruction expert. The expert prepared a video animation [263]*263comprising six segments, three depicting the collision with the Sanders vehicle traveling its actual speed, and three depicting the accident with the Sanders vehicle traveling the 25 mph posted speed limit instead of 47.5 mph.5 The animations showed that when Sanders’ vehicle traveled at 25 m.p.h., the accident would not have occurred.
¶11 The court ruled that the three segments depicting the Sanders vehicle traveling 25 mph lacked foundation and were not admissible. For the same reason, the court refused to allow Hultenschmidt’s expert to testify that the collision would not have occurred had Sanders been observing the posted speed limit.
¶12 The jury convicted Hultenschmidt of vehicular homicide and he appeals.
ANALYSIS
Blood Alcohol Sample
¶13 Hultenschmidt first contends that the trial court erred in admitting the blood test results because the State failed to present a prima facie case that the blood sample lab analysis complied with statutory and regulatory provisions. Hultenschmidt raises several evidentiary arguments regarding his blood sample preservation, all stemming from this same premise: that the State failed to show that the blood test conformed with WAC 448-14-020(3)(a) and (b).
¶14 Specifically, Hultenschmidt argues that the court should not have admitted the blood test results because the State made no showing that enzyme poison was present in his blood sample, his blood sample was placed in a chemically clean and dry container, his sample was immediately and appropriately sealed with an inert and leak-proof stopper, or the toxicologist possessed a valid permit for performing blood alcohol tests.
[264]*264f 15 We review a trial court’s evidentiary rulings for abuse of discretion. State v. Stubsjoen, 48 Wn. App. 139, 147, 738 P.2d 306, review denied, 108 Wn.2d 1033 (1987). A court abuses its discretion when it exercises it on untenable grounds or for untenable reasons. State ex rel. Carroll v. Junker, 79 Wn.2d 12, 26, 482 P.2d 775 (1971).
¶16 Our analysis involves interpreting the interplay among various statutes and regulations concerning driving under the influence of intoxicating liquor or drugs and vehicular homicide. RCW 46.61.520(l)(a). Here, the jury convicted Hultenschmidt under the vehicular homicide statute, which provides that:
[T]he driver is guilty of vehicular homicide if the driver was operating a motor vehicle:
(a) While under the influence of intoxicating liquor or any drug as defined by RCW 46.61.502.
RCW 46.61.520(1).
¶17 The vehicular homicide statute refers us to RCW 46.61.502, which provides that:
(1) A person is guilty of driving while under the influence of intoxicating liquor or any drug if the person drives a vehicle within this state:
(a) And the person has, within two hours after driving, an alcohol concentration of 0.08 or higher as shown by analysis of the person’s breath or blood made under RCW 46.61.506; or
(b) While the person is under the influence of or affected by intoxicating liquor or any drug; or
(c) While the person is under the combined influence of or affected by intoxicating liquor and any drug.
¶18 RCW 46.61.502(l)(a) in turn refers us to RCW 46.61.506, which prescribes blood sample testing:
(3) Analysis of the person’s blood or breath to be considered valid under the provisions of this section or RCW 46.61.502 or 46.61.504 shall have been performed according to methods approved by the state toxicologist and by an individual possessing a valid permit issued by the state toxicologist for this purpose. The state toxicologist is directed to approve satisfactory techniques or methods, to supervise the examination of [265]*265individuals to ascertain their qualifications and competence to conduct such analyses, and to issue permits which shall be subject to termination or revocation at the discretion of the state toxicologist.
¶19 Finally, RCW 46.61.506(3) enables the state toxicologist to promulgate regulations for proper blood sample analysis. The Washington Administrative Code (WAC) requires that blood samples be kept in a clean, dry, sealed container and preserved by a stabilizing anticoagulant and enzyme poison. WAC 448-14-020(3)(a) and (b). The sample must be analyzed by a validly licensed technician. RCW 46.61.506.
¶20 Hultenschmidt asserts that the trial court should have excluded the results of his blood sample analysis because the State did not prove the elements of WAC 448-14-020(3)(a) and (b) and RCW 46.61.506. It is well established that a blood sample analysis is admissible to show intoxication under RCW 46.61.502 only when it is performed according to WAC requirements. State v. Bosio, 107 Wn. App. 462, 466-67, 27 P.3d 636 (2001).
¶21 In Bosio, the court held that blood alcohol test results could not be admitted into evidence unless the State presented prima facie proof that the test chemicals and blood sample are “free from any adulteration which could conceivably introduce error to the test results.” The court elaborated:
The purpose of requiring the use of anticoagulants and enzyme poison in the blood sample is to prevent clotting or a loss of alcohol concentration in the sample.
The regulations promulgated by the state toxicologist for analyzing blood do not specify the approved testing methods, “but rather, outlines the criteria any approved method must meet.” “The regulations approve the tests only if they meet strict standards for precision, accuracy, and specificity.” These uniform procedures help ensure that the test results will be accurate and reliable.
Bosio, 107 Wn. App. at 466-67 (citations omitted). The court reversed Bosio’s conviction of vehicular assault and re[266]*266manded for a new trial because the trial court improperly admitted the blood test results when the State did not present evidence that an enzyme poison was added to the blood sample. Bosio, 107 Wn. App. at 468. Likewise, in State v. Garrett, the court vacated a conviction of driving under the influence because the trial court admitted the results of the blood test when the State did not present evidence that an anticoagulant had been added to the blood sample. 80 Wn. App. 651, 654, 910 P.2d 552 (1996).
¶22 Here, the State counters that it proved that the gray-topped tubes satisfied the “administrative regulations.” Resp’t’s Br. at 13. But the State fails to mention the requirement of an enzyme poison in the tube. The State argues that it established a prima facie case that the samples were free from adulteration that could introduce error into the test results. But again, the State does not address the lack of an enzyme poison.
¶23 Here, Miranda testified that the gray-topped tubes arrived with intact seals:
Q: How are blood samples preserved?
A: We suggest that they are—that we receive samples containing anticoagulant in a preservative, sodium chloride [sic] or potoxinoxolate [sic]. The tubes that contain those chemicals to preserve the blood are characterized by having a gray top and that’s what seals the tube.
Q: What are the common forms of anticoagulants?
A: The potoxinoxolate [sic] and sodium chloride [sic] are both anticoagulants.
Q: To the lay person what would they look like if you saw them?
A: They would look like salt, just a little powder. If you had a little bit of one of the other, it would be hard to distinguish them.
Q: When you say like salt, what color would that be?
A: In a white color.
Q: Is any enzyme poison required to [preserve] a blood sample taken from a human being?
[267]*267A: It is not required.
Q: Is there anything else other than an anticoagulant needed to preserve the ethicacy [sic] of a blood sample?
A: No.
Q: Was the blood coagulated in the tubes?
A: No, it was not.
Q: How does it stay not coagulated in the tubes?
A: Usually the anticoagulant prevents coagulation of the sample, and the way we can tell is when blood clots it forms various forms inside the tube. You can easily see—it’s like it’s formed to the cylinder, the blood. When it’s in a liquid form you can move it around and you could see it moves easily.
Q: How did this particular sample arrive?
A: It was not coagulated.
Q: Were you able to move it around easily?
A: Yes, I was.
Q: Did that tell you anything?
A: That it wasn’t coagulated.
RP (May 13, 2002) at 107-09.
¶24 The State did not ask Miranda any additional questions about enzyme poisons. The State offered no evidence of an enzyme poison present in the blood sample. Thus, the State did not demonstrate that the blood test complied with WAC 448-14-020(3)(a) and (b). Accordingly, the blood test sample was inadmissible under Bosio.6 The remedy is to remand for a new trial. Because we remand, we address Hultenschmidt’s remaining arguments likely to arise on retrial.
[268]*268
Accident Reconstruction Demonstration
¶25 Hultenschmidt further contends that the trial court violated his constitutional right to present a defense by excluding an animation that would have shown that, had the other vehicle slowed to the speed limit just six seconds before the accident, the collision would not have occurred.
¶26 A trial court may admit demonstrative evidence when the experimental conditions are substantially similar to the facts of the case. State v. Finch, 137 Wn.2d 792, 816, 975 P.2d 967, cert. denied, 528 U.S. 922 (1999). If substantially similar, then demonstrative evidence such as photographs and videotapes may be admitted when their probative value outweighs their prejudicial effect. State v. Rogers, 70 Wn. App. 626, 633, 855 P.2d 294 (1993), review denied, 123 Wn.2d 1004 (1994).
¶27 Hultenschmidt wanted to show the jury an animated reconstruction videotape demonstrating that the accident would not have occurred had the other driver obeyed the 25 mph speed limit. The court excluded the animations showing the other car traveling 25 mph and avoiding the collision.7 In ruling, the court explained:
That [referencing the animations with the other car traveling at 25 mph] is confusing and not helpful to the jury. I looked at that very carefully and am certainly familiar with what you can show. ... I think that’s allowed as long as it’s illustrative, and as long as the facts which are assumed are facts within this expert’s expertise and based on some reasonable assumption. The second set of video assumes something that did not occur and would be irrelevant to this, and is confusing to me and unduly confusing to the jury.
RP (May 14, 2002) at 117. The court also explained:
You can’t put the second car a block away at 25 miles an hour. You might as well put it ten blocks away. You could show the same video having Mr. Hultenschmidt stay home. He wouldn’t have been there and there wouldn’t have been a [269]*269collision. There’s no foundation, nor can there be a foundation to put the Sanders vehicle a block away and have it do 25 miles an hour. You can’t lay that foundation. It’s a fact that could never be put in evidence. The other is this expert’s opinion as to what did happen based on foundational testimony and scuff mark skids and calculations, so that [can] come in. You can’t have an expert witness testify as to a hypothetical where there’s no possible way of providing a single fact of that hypothetical.
RP (May 14, 2002) at 115.
¶28 The trial court considered the similarity between the recreated and actual events and concluded that there was insufficient similarity to justify their admission. The trial court did not abuse its discretion in excluding the evidence.
Jury Instructions
¶29 Hultenschmidt finally contends that the blood testing methodology set out in RCW 46.61.506 is an essential element of vehicular homicide and that the trial court erred by not instructing the jury on this element. Because Hultenschmidt could have proposed such an instruction, but did not, he waived this argument on appeal. State v Hickman, 135 Wn.2d 97, 102-03, 954 P.2d 900 (1998).
¶30 Reversed and remanded.
Seinfeld, J. Pro Tern., concurs.