Protein C Activity and Antigen

What it measures

• Protein C, ActivityLOINC 27819-2
• Protein C, AntigenLOINC 27820-0

Specimen

Specimen

2 mL frozen plasma (1 mL in two separate tubes) collected in a 3.2% sodium citrate (light blue-top) tube

Minimum volume

0.5 mL (x2)

Container

Transport tubes (x2)

Temperature

Frozen

Please submit a separate, frozen vial for each special coagulation assay ordered. 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.

Billing

CPT 85302, 85303