Protein C Activity and Antigen Blood Test
Compare labs
| Feature |
Labcorp
|
Quest Diagnostics
|
|---|---|---|
| Price | Coming soon | $107.99 |
| Results in | — | ~5 business days |
| Sample type | — | Blood Plasma |
| Require fasting | — | No |
About the test
Aids in characterization of protein C deficiency. Type I deficiency is characterized by reduction in activity (functional) and antigen levels. With type II deficiency (dysfunctional protein), antigen levels may be normal and activity levels are decreased. Acquired deficiencies may occur with vitamin K antagonists/deficiency, liver disease, malignancy, consumptive DIC, surgery, trauma, and hepatic immaturity of the newborn. Drug therapy with L-asparaginase or fluorouracil can also reduce Protein C antigen levels.
Anticoagulant interference: Expected impact by therapeutic levels (potential interference depends upondrug concentration): Vitamin K Antagonists (eg. coumadin): decrease; Heparin (UFH or LMWH): no effect to falsely increased activity levels at higher levels; Dabigatran or Argatroban (Direct Thrombin Inhibitors): may falsely increase activity; Rivaroxaban, Apixaban, Edoxaban (Factor Xa Inhibitors): may falsely increase activity.
Included biomarkers & Reference ranges
| Biomarker | Reference range |
|---|---|
| Protein C Activity Measures the activity of Protein C, a natural anticoagulant. Low activity is linked to an increased risk of blood clots. | — |
| Protein C Antigen Measures the actual amount of Protein C protein present, used together with the activity test to fully characterize a Protein C deficiency. | — |
Reference ranges vary by lab, age, and sex (M/F). Your report shows your exact range. Click any biomarker to see its optimal range and what your results mean.
How it works
- 1. Order online No referral or insurance
- 2. Get a requisition By email in 24–72 hours
- 3. Visit a draw center Bring a matching photo ID
- 4. Get results Securely by email
- These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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