Institute of Psychiatry

institute of psychiatry

Heavy Alcohol Testing- Carbohydrate Deficient Transferrin (%dCDT) and Urine Ethylglucuronide (EtG) Testing

Carbohydrate Deficient Transferrin (%dCDT) is a bio-marker for heavy alcohol consumption.  %dCDT, a heavy alcohol usage test, allows for the monitoring of alcohol consumption over an extended period of time.  The Clinical Neurobiology Laboratory (CNL) participated in the FDA certification of the original Bio-Rad %CDT TIA and has recently (Jan. 2009) switched to an HPLC/spectrophotometric %dCDT assay recommended by the International Federation of Clinical Chemistry workgroup on CDT of which Dr. Anton is a member.  The CNL has processed and run close to fifteen thousand %CDT samples for clinical and contractual work.

CNL Alcohol Biomarker Tests

%dCDT Frequently Asked Questions

Guideline On The Clinical Use of %dCDT

Physician and Counselor Experiences With %CDT

%dCDT Case Examples

%CDT and %dCDT Articles

%dCDT In The Press


Carbohydrate Deficient Transferrin (%dCDT) Requisition (For use when referring samples to CNL)

Questions and Facts about Urine Ethylglucuronide (EtG) Testing for Alcohol Consumption


"I utilize %CDT in outpatients to screen high risk medical patients...those with hypertension, diabetes, heart disease, depression"

-M.F. Fleming, MD, MPH

Contact Us

Clinical Neurobiology Laboratory
67 President St. PH144
Charleston, SC 29425
Ph. 843-792-5441
Fax 843-792-7371


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