SECTION 18.2-269. Presumptions from alcohol or drug content of blood  

A. In any prosecution for a violation of § 18.2-36.1 or clause (ii), (iii), or (iv) of § 18.2-36.1 or any similar ordinance, the amount of alcohol or drugs in the blood of the accused at the time of the alleged offense as indicated by a chemical analysis of a sample of the accused's blood or breath to determine the alcohol or drug content of his blood (i) in accordance with the provisions of §§ 18.2-36.1 through 18.2-36.1 or (ii) performed by the Department of Forensic Science in accordance with the provisions of §§ 18.2-36.1 , 18.2-36.1 , and 18.2-36.1 on the suspect's whole blood drawn pursuant to a search warrant shall give rise to the following rebuttable presumptions:

1. If there was at that time 0.05 percent or less by weight by volume of alcohol in the accused's blood or 0.05 grams or less per 210 liters of the accused's breath, it shall be presumed that the accused was not under the influence of alcohol intoxicants at the time of the alleged offense;

2. If there was at that time in excess of 0.05 percent but less than 0.08 percent by weight by volume of alcohol in the accused's blood or 0.05 grams but less than 0.08 grams per 210 liters of the accused's breath, such facts shall not give rise to any presumption that the accused was or was not under the influence of alcohol intoxicants at the time of the alleged offense, but such facts may be considered with other competent evidence in determining the guilt or innocence of the accused;

3. If there was at that time 0.08 percent or more by weight by volume of alcohol in the accused's blood or 0.08 grams or more per 210 liters of the accused's breath, it shall be presumed that the accused was under the influence of alcohol intoxicants at the time of the alleged offense; or

4. If there was at that time an amount of the following substances at a level that is equal to or greater than: (i) 0.02 milligrams of cocaine per liter of blood, (ii) 0.1 milligrams of methamphetamine per liter of blood, (iii) 0.01 milligrams of phencyclidine per liter of blood, or (iv) 0.1 milligrams of 3,4-methylenedioxymethamphetamine per liter of blood, it shall be presumed that the accused was under the influence of drugs at the time of the alleged offense to a degree which impairs his ability to drive or operate any motor vehicle, engine or train safely.

B. The provisions of this section shall not apply to and shall not affect any prosecution for a violation of § 18.2-36.1 .

Code 1950, § 18.1-57; 1960, c. 358; 1964, c. 240; 1966, c. 636; 1972, c. 757; 1973, c. 459; 1975, cc. 14, 15; 1977, c. 638; 1983, c. 504; 1986, c. 635; 1989, cc. 554, 574, 705; 1992, c. 830; 1994, cc. 18.2-36.1 , 18.2-36.1 ; 2005, c. 18.2-36.1 ; 2017, c. 18.2-36.1 .