The number of tests used for the detection of ethanol ingestion is increasing. The field is rapidly moving beyond ethanol alone as a marker of ethanol intake. The combined measurement of carbohydrate deficient transferrin, FAEEs, 5-HTOL/5-HIAA, acetaldehyde adducts, and phosphatidylethanol may one day be used to approximate the time and amount of ethanol ingestion. The ultimate configuration of a panel of tests for monitoring ethanol intake awaits the results of studies that identify the clinical usefulness of each marker.
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Michael Laposata (1999) studied this question.