Protein S blood test

What is a Protein S Blood Test?

Protein S is a blood protein produced in the liver. A protein S blood test is used to measure the levels of protein S in the blood. Low levels of protein S can lead to a condition called thrombophilia, which increases the risk of developing a blood clot.

Why is a Protein S Blood Test Done?

A protein S blood test is typically done to evaluate for thrombophilia, which is a genetic condition that increases the risk of developing blood clots. The test is also used to help diagnose the cause of repeated episodes of unexplained blood clots and to evaluate for congenital proteinS deficiency.

What is the Preparation for a Protein S Blood Test?

There is no special preparation needed for a protein S blood test. You can eat and drink normally before the test.

What is the Procedure for a Protein S Blood Test?

A protein S blood test is typically performed by drawing a small sample of blood from a vein in the arm. The sample is then sent to a laboratory for analysis. The test results will indicate the amount of protein S present in the sample.

Types of Protein S Blood Tests

• Total Protein S Test: Measures the amount of total protein S present in the blood.
• Free Protein S Test: Measures the amount of protein S that is not bound to other proteins in the blood.

Risks of a Protein S Blood Test

There are minimal risks associated with a protein S blood test. These include discomfort from the needle puncture and bruising at the puncture site. Rarely there may be infection, excessive bleeding, or faintness.

When is a Protein S Blood Test Ordered?

A protein S blood test is typically ordered when an individual has a family history of clotting disorders, has experienced repeated episodes of blood clots, or has certain genetic mutations associated with thrombophilia. It is also ordered in individuals who have had a deep vein thrombosis or pulmonary embolism, or in individuals with antiphospholipid syndrome.