Test Code Billings Clinic: 4077 Alcohol (Ethanol), Plasma or Serum
Performing Laboratory
Billings Clinic Laboratory: Chemistry
Useful For
The determination of ethyl alcohol concentration is commonly used for measuring legal impairment, investigating forensic evidence, diagnosing and/or treating alcohol dependency, as well as detecting alcohol poisoning.
Methodology
Alcohol Dehydrogenase
Specimen Requirements
Submit only 1 of the following specimens:
Serum or plasma should be physically separated from cells as soon as possible with a maximum limit of two hours from the time of collection.
- DO NOT use alcohol prep to cleanse skin. Use a NON-ALCOHOL GERMICIDE to cleanse the skin prior to venipuncture.
- Specimen collection tube MUST be FULL
- Indicate plasma or serum on request form.
- Label specimen appropriately (plasma or serum).
- Send specimen refrigerated.
- Avoid exposure of specimen to atmosphere.
Plasma
- Draw blood in a green-top (lithium heparin) tube(s).
- Keep tube capped during centrifugation.
- Spin down and send 1 mL of heparinized plasma in original tube or transfer 1 mL of heparinized plasma to plastic vial.
- Cap tightly.
Serum
- Draw blood in a plain, red-top tube(s) or a serum gel tube(s).
- Keep tube capped during centrifugation.
- Spin down and send 1 mL of serum in original tube or transfer 1 mL of serum to plastic vial.
- Cap tightly.
Storage/Stability
Specimen Type | Temperature | Time |
Serum, Plasma | Refrigerated (preferred) | 14 days |
Frozen | 1 year | |
Ambient | 2 days |
Reject Due To
- Avoid repeated freeze/thaw cycles
Reference Values
None detected
Call-back toxic concentration
value: ≥300 mg/dL
Note: Levels >80 mg/dL = legal
intoxication in Montana
Day(s) Test Set Up
Daily
Test Classification and CPT Coding
80320 - Alcohols
LOINC Code Information
Reporting Name | LOINC Code |
Alcohol, Blood | 5643-2 |