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Clinical Trial CDT
Test Code916985
CPT Codes
82373, 84466<br>Clinical Trial Code
Preferred Specimen
1 mL serum
Patient Preparation
Fasting preferred
Minimum Volume
0.5 mL
Instructions
Serum samples must be fully coagulated, centrifuge within 1 hour of collection, and must not contain any particles or traces of fibrin after centrifugation. Transfer serum to a clean, plastic, screw-capped vial.
Transport Container
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?)
Grossly hemolyzed • Gross lipemia • Gross icterus
Methodology
Nephelometric
Setup Schedule
Set up: Mon-Sat; Report available: Next day
Reference Range
See Laboratory Report
Clinical Significance
Heavy alcohol use, (defined as >4 or 5 beverages per day for two weeks or more), are 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.
