Skip to main content

Specimen Collection Manual and Test Catalog

  or
  or
  or

TRANSFERRIN, CARBOHYDRATE-DEFICIENT (ALCOHOL USE)

Geisinger Epic Procedure Code:  LAB1254    Geisinger Epic ID:  52941

SPECIMEN COLLECTION
Specimen type: 

Serum


Preferred collection container: 
Alternate collection container: 
6 mL red-top (plain, non-serum separator) tube
Specimen required: 

1 mL serum; minimum 0.5 mL.



SPECIMEN PROCESSING
Processing 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.


Rejection criteria: 

Gross hemolysis • Grossly lipemic • Grossly icteric



TEST DETAILS
CPT code(s):  82373, 84466
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Test includes: 

CDT; Transferrin; Percent CDT


Methodology: 
Nephelometry
Synonyms: 

Quest test code 16985, Carb Def Tra; Carbohydrate Deficient Transferrin,CDT


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.


Review Date:  12/11/2024

Performing Locations