There are several lab tests for hemophilia. However, the main tests detect the clotting activity of factors VIII and IX, which are proteins in the blood. Hemophilia is a bleeding disorder in which an ...

Protein S activity is a test to judge your risk of blood clots. Blood clots that form in the veins are dangerous. Protein S is a substance that controls the blood clotting mechanism and prevents ...

Blood clots form naturally as a way to stop bleeding when someone is injured. But blood clots in patients with medical issues, such as mechanical heart valves or other heart conditions, can lead to a ...