Factor VII **

The Factor V Leiden (p.Arg506Glu Gene Mutation) test is performed to detect a genetic change in the Factor V gene that results in the p.Arg506Glu mutation. This mutation changes the structure of factor V during blood clotting, making it less likely to be broken down by Protein C, an important factor in stopping blood clotting. This results in an increased risk of abnormal blood clotting, a condition called thrombosis.

The Factor IX test is primarily used to diagnose hemophilia B, assess Factor IX deficiency, monitor treatment effectiveness, and support the diagnosis of blood clotting disorders.

A factor VIII activity assay is a blood test that measures the activity of factor VIII, a protein that helps blood clot. This test can help diagnose hemophilia A and other clotting disorders. 

The Factor XI test is primarily used to diagnose Factor XI deficiency (Hemophilia C), assess bleeding risk, monitor treatment, and support the diagnosis of other blood clotting disorders

This test measures the time it takes for the earlobe to stop bleeding after a vascular (blood vessel) wound is created with a blood lancet. It is performed in preoperative patients receiving anticoagulants or with suspected coagulation disorders.