Protein C Antigen
Order Name
PROT C AG
Test Number: 1503250
Revision Date 12/12/2022
Test Number: 1503250
Revision Date 12/12/2022
| Test Name | Methodology | LOINC Code |
|---|---|---|
|
Protein C Antigen
|
Enzyme Immunoassay | 27820-0 |
| SPECIMEN REQUIREMENTS | ||||
|---|---|---|---|---|
| Specimen | Specimen Volume (min) | Specimen Type | Specimen Container | Transport Environment |
| Preferred | 2mL (1) | Double Spun Plasma | Sterile, Capped Plastic Tube | Ambient whole blood or frozen aliquots |
| Instructions | Specimen Type: Blue-top (sodium citrate plasma) tube (2) Specimen Storage: FREEZE Specimen Collection: 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. specimens for each test requested. Print and use the Specimen Collection Bulletin as a tube-filling guide. Special Instructions: If the patient's hematocrit exceeds 55%, the volume of citrate in the collection tube must be adjusted. Refer to Coagulation Collection Procedures for directions. Specimen Stability: Ambient: Not Available, Refrigerated : Not Available, Frozen: Not Available |
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| GENERAL INFORMATION | |
|---|---|
| Expected TAT | 2 - 4 days |
| Clinical Use | Protein C Antigen levels may be decreased with congenital deficiency, treatment with oral anticoagulants, liver disease, DIC, and post-surgery. |
| Performing Labcorp Test Code | 080465 |
| Notes | Labcorp Test Code: 080465 |
| CPT Code(s) | 85302 |
| Lab Section | Reference Lab |