The Blood and Beverage Alcohol Section tests evidence for the presence and concentration of alcohol (specifically ethanol). Blood alcohol results are reported in grams per 100 milliliters (g/100mL) and beverage alcohol results are reported as a percentage by volume (% v/v).
Processing of Evidence by the Blood and Beverage Alcohol Section
After documenting case specific information such as subject’s name, collection date, and collection time, a measured amount of sample is removed from the collection tube and dispensed into a glass vial. The contents of the vial are then diluted with a measured amount of water solution called the internal standard solution. The vial is then capped with an airtight seal. The air above the liquid (headspace) is analyzed using a gas chromatograph equipped with flame ionization and mass selective detectors (GC/FID/MSD).
How do I order more blood/beverage alcohol collection kits?
The crime lab will provide blood alcohol collection kits and beverage alcohol collection kits to Alaska law enforcement agencies. Requests for kits should be emailed to DPS Supply (DPS.email@example.com). To speed up fulfillment of your order request, please ensure the following information is provided:
Liquids that are inside manufacturer sealed containers labeled to contain alcohol will not be tested.
What is the lowest alcohol concentration currently reported by the lab?
The laboratory currently reports blood alcohol concentrations down to 0.020 g/100mL. If our data indicates an alcohol concentration between 0.010 and 0.019 g/100mL, the result will be reported as “Less than 0.020 g/100mL”. Data indicating a concentration lower than 0.010 g/100mL is reported as negative.
Why wasn’t drug toxicology performed?
The crime lab currently funds the outsourcing of drug toxicology testing through a National Highway Traffic Safety Administration (NHTSA) grant. Cases have to involve a driving-related offense in order to be forwarded for drug toxicology testing.
Samples will not be forwarded if the blood alcohol result is 0.100 g/100mL or higher and the incident did not involve a driving related injury.
What alcohol interpretation topics can experts at the lab cover?
The Interpretation of Alcohol Results manual is located on the Quality Assurance page of the website under the Quantitative Alcohol Manuals tab. The intent of this manual is to describe how forensic scientists within the alcohol section of the laboratory will interpret the results of blood and breath alcohol measurements. It also serves as a summary to the legal community as to what to expect when a forensic scientist’s testimony is to include alcohol interpretation.
The Quantitative Alcohol Procedure Manual and the Interpretation of Alcohol Results Manual are located on the Quality Assurance page of the website under the Quantitative Alcohol Manuals tab.
5700 East Tudor Road
Anchorage, AK 99507
Phone: (907) 269-5511