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Transferrin, Carbohydrate-deficient (Alcohol Use)
Test Code16985
Includes
CDT
Transferrin
% CDT
Transferrin
% CDT
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Patient Preparation
Fasting preferred
Minimum Volume
0.5 mL
Instructions
Serum samples must be fully coagulated, centrifuged within 1 hour of collection, and must not contain any particles or traces of fibrin after centrifugation. Transfer serum to a clean, plastic, screw-cap vial.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 24 hours
Refrigerated: 7 days
Frozen: 90 days
Refrigerated: 7 days
Frozen: 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Grossly lipemic • Grossly icteric
Methodology
Nephelometry
Setup Schedule
P.M. Sets up 6 days a week.
Report Available
Reports in 1 day.
Clinical Significance
Heavy alcohol use (defined as >4 or 5 beverages per day for two weeks or more) is commonly associated with elevated CDT levels as are certain liver diseases such as primary biliary cirrhosis and chronic active hepatitis and in some patients with genetic D variants of transferrin.
