Protein S Antigen Free Test
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Test Code: 164519
Specimen Type: Blood
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Description:
Protein S Antigen Free Test
This test measures the level of Free Protein S in the blood. Protein S is one of 2 proteins that work together to regulate the formation of blood clots. Protein S along with Protein C helps ensure proper clotting to stop bleeding when the body is injured as well as ensuring that excessive unnecessary clotting does not take place. People who do not have enough of either Protein S or C or have proteins that are not functioning properly can suffer from clotting disorders such as deep venous thrombosis or pulmonary embolism. A deficiency in protein S can be due to an inherited condition or caused by underlying disorders such as liver disease, kidney disease, cancer, or severe infection. Free protein S is the portion of protein S antigen which is not bound to other proteins on the blood.
Measuring free levels of protein S can help to determine what type of deficiency a person has. However, this information is more useful when used in conjunction with other test results including Total Protein S and Protein S Activity. A test for Total and Free Protein S together is also available as well as a Protein S Deficiency Panel which measures total protein S antigen and activity.
Turnaround for this test is typically 3-5 business days.
Where can I find a Protein S Antigen Free Test near me?
Check our lab finder to locate a collection site in your area.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Requirements:
Avoid Warfarin (Coumadin) therapy for 2 weeks and Heparin therapy for 2 days prior to specimen collection. Consult your doctor prior to discontinuing any medication.
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