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Carbohydrate-deficient Transferrin (CDT) Blood Test

CDT testing can be an effective tool for the early diagnosis of chronic alcohol misuse, for the detection of patients addicted to alcohol, and for the follow-up of treatment and diagnosis of alcohol relapse.
Sample Report

Test Code: 123211

Also Known As: CDT, dCDT, Diasialotransferrin, Transferrin Isoforms

Methodology: Capillary electrophoresis (CE)

Preparation: No special preparation required.

Test Results: 3-5 days. May take longer based on weather, holiday or lab delays.


CDT quantitation is useful in detecting abusive alcohol consumption (defined as ethanol consumption >40 mL per day for at least two weeks) and a more specific marker for alcohol exposure than other available markers, such as γ-glutamyl transferase (GGT). It enables early detection of alcohol misuses and follow-up of alcoholic patients.

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