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Protein C and Protein S Antigen, Total
Test Code42077N
Preferred Specimen
1 mL plasma collected in 3.2% sodium citrate (light blue-top) tube [x2]
Minimum Volume
0.5 mL [x2]
Instructions
Draw blood in a light blue-top tube containing 3.2% sodium citrate, mix gently by inverting 3-4 times. Centrifuge 15 minutes at 1500 g within one hour of collection. Using a plastic pipette, remove plasma, taking care to avoid the WBC/platelet buffy layer and place into a plastic vial. Centrifuge a second time and transfer platelet-poor plasma into a new plastic vial(s). Freeze immediately and transport on dry ice.
Transport Temperature
Frozen
Specimen Stability
Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 14 days
Refrigerated: Unacceptable
Frozen: 14 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Received room temperature • Received refrigerated • Received thawed
Methodology
Immunoassay (IA) • Immunoturbidimetric
Setup Schedule
See individual assays
