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- Alcohol, Blood
- Blood Alcohol Level
- Ethyl Alcohol, Blood
Quantitation of alcohol level for medical or legal purposes; test unconscious patients; used to diagnose alcohol intoxication and determine appropriate therapy; detect alcoholism and to monitor ethanol treatment for methanol intoxication. Must be tested as possible cause of coma of unknown etiology since alcohol intoxication may mimic diabetic coma, cerebral trauma, and drug overdose.
Gas chromatography (GC)
Negative (cutoff = 0.010%)
Ethanol is absorbed rapidly from the GI tract. Peak blood levels usually occur within 40 to 70 minutes on an empty stomach. Food in the stomach can decrease the absorption of alcohol. Ethanol is metabolized by the liver to acetaldehyde. Once peak blood ethanol levels are reached, disappearance is linear; a 70 kg man metabolizes 7−10 g of alcohol/hour (15±5 mg/dL/hour). The urine:blood ratio is considered to be about 1.35:1 but is quite variable. The average saliva:blood ratio is 1:20. Symptoms of intoxication in the presence of low alcohol levels could indicate a serious acute medical problem requiring immediate attention. The half-lives and effectiveness of certain drugs (eg, barbiturates, etc) are increased in the presence of ethanol.
Whole blood or serum
Gray-top (sodium fluoride) tube (preferred) or red-top tube. Submit original unopened tube.
Do not prepare venipuncture site with alcohol or remove stopper from tube.
|Order Code||Order Code Name||Order Loinc||Result Code||Result Code Name||UofM||Result LOINC|
|017996||Ethanol, Blood||56478-1||072470||Special Handling||N/A|