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Thrombin Time Heparin
Test CodeTTH
CPT Codes
85303
Preferred Specimen
1 Sodium Citrate Plasma Blue
Minimum Volume
Blue top must be filled to Minimum Fill Indicator Line on tube.
Other Acceptable Specimens
none
Instructions
Outreach clients should spin the blue top, remove the plasma, and freeze in a polypropylene tube.
Transport Container
BLUE, polypropylene tube
Transport Temperature
Blue - RT; polypropylene - frozen
Specimen Stability
Blue - 4 hours RT; Plasma - 8 hours RT if patient is not on heparin, 2 hours RT if patient is on heparin, 2 weeks frozen
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Sample must be free of clots and hemolysis.
Methodology
Electromagnetic Viscosity Detection
Setup Schedule
Daily on Receipt
Report Available
Upon Completion of Analysis