Normal values are 60-150% inhibition.
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
What do Abnormal Results Mean?
A lack (deficiency) of protein S can lead to excess clotting. These clots tend to form in veins, not arteries.
A protein S deficiency may be inherited. It can also develop due to pregnancy or certain diseases, including disseminated intravascular coagulation (DIC), liver disease, warfarin (coumadin) use, chronic antibiotic use, and HIV infection.