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Protein S Antigen Blood Test
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| Feature |
Labcorp
|
Quest Diagnostics
|
|---|---|---|
| Price | $151.99 | $56.99 |
| Results in | ~3 business days | ~5 business days |
| Sample type | Blood Plasma | Blood Plasma |
| Require fasting | No | No |
About the test
This profile helps to confirm and characterize congenital deficiency of protein S.
Included biomarkers & Reference ranges
| Biomarker | Reference range |
|---|---|
| Protein S Antigen, Free The unbound, biologically active portion of Protein S, a natural anticoagulant. Low levels raise the risk of blood clots. | — |
| Protein S Antigen, Total Measures the total amount of Protein S — both free and bound forms — a natural anticoagulant. Low levels raise the risk of blood clots. | — |
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.
Preparation
- Avoid warfarin (Coumadin) therapy for two weeks before your blood draw.
- Avoid heparin therapy for two days before the test.
Quest Diagnostics lists no special preparation for this test.
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.
Consultations
Not sure how to read your results? We can help.
Schedule a consultation with a Hormunity specialist. We’ll walk through every marker, interpret what it means for you, and map out the next steps for your care.
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