Protein C Antigen Blood Test

Compare labs

Feature	Labcorp	Quest Diagnostics
Price	$245.49	$49.49
Results in	~4 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 protein C deficiency.

Included biomarkers & Reference ranges

Biomarker	Reference range
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.

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.

Book a specialist