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Prothrombin Mixing Study
Test CodePTM
CPT Codes
85610; 85611 x 2
Includes
PT Baseline, PT 1:1 Mix Immediate, PT 1:1 Mix Incubated
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 - 24 hours RT; Plasma - 24 hours RT, 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
Reference Range
SEE REPORT