PC Fun+PS Fun
Test Code: 337394
Performing Lab: LabCorp
CPT Code: 85303 001 85306 001
Specimen Type
Plasma, FROZEN
Specimen Container
Blue-top (sodium citrate) tube
Volume
2 mL
Specimen Handling
Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate.(1) Evacuated collection tubes must be filled to completion to ensure a proper blood-to- anticoagulant ratio.(2,3) The sample should be mixed immediately by gentle inversion at least six times to ensure adequate mixing of the anticoagulant with the blood. A discard tube is not required prior to collection of coagulation samples unless the sample is collected using a winged (butterfly) collection system. With a winged blood collection set a discard tube should be drawn first to account for the dead space of the tubing and prevent under-filling of the evacutated tube.(4,5) When noncitrate tubes are collected for other tests, collect sterile and nonadditive (red-top) tubes prior to citrate (blue-top) tubes. Any tube containing an alternative anticoagulant should be collected after the blue-top tube. Gel-barrier tubes and serum tubes with clot initiators should also be collected after the citrate tubes. Print and use the Specimen Collection Bulletin as a tube-filling guide.
Temperature
FREEZE
Methodology
See individual test components.
| Result Code | Result Name | LOINC |
|---|---|---|
| 117705 | Protein C-Functional | 27818-4 |
| 164526 | Protein S-Functional | 27822-6 |
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