Protein S Antigen, Total and Free

What this laboratory test evaluates

DetailsProtein S Antigen, Total and Free – This test measures both the total and free levels of protein S, a blood protein involved in regulating blood clotting.

What type of sample is required for this test?1 mL frozen plasma collected in a 3.2% sodium citrate (light blue-top) tube

Test ResourcesFor more information, please consult your healthcare provider.

Additional test information

Protein S Antigen, Total and Free – This test measures both the total and free levels of protein S, a blood protein involved in regulating blood clotting.

Collection and processing

• Sample type: Plasma
• Fasting: No
• Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected

How Sunridge uses laboratory information

Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.

Before requesting this test

Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.