Protein C and Protein S, Functional
Also known as: PC Activity, PS Activity
Use
Not provided.
Special Instructions
Not provided.
Limitations
Not provided.
Methodology
Other
Biomarkers
Result Turnaround Time
Not provided.
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
1 mL (0.5 mL minimum) frozen, platelet‑poor plasma collected in each of two 3.2% sodium citrate (light blue‑top) tubes
Minimum Volume
0.5 mL minimum
Container
light blue‑top tube containing 3.2% sodium citrate (plastic vial after processing)
Collection 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.
Causes for Rejection
Hemolysis
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Unacceptable |
| Refrigerated | Unacceptable |
| Frozen | 14 days |