Factor XI Assay, Plasma


Factor XI is a zymogen of a serine protease that participates in the blood coagulation cascade. It is synthesised in the liver and secreted into the blood as a homo-dimer. Through proteolytic cleavage, both factor XIIa and thrombin activate factor XI which ultimately activates factor IX. Deficiency in factor XI results in a bleeding disorder that is milder than hemophilia A or B. Spontaneous bleeding is rare. Abnormal bleeding usually occurs only as the result of an accident or a surgical procedure.


This test is useful in the differential diagnosis of bleeding disorders and haemophilias. Factor XI deficiency is inherited as an autosomal, incompletely recessive trait.

Sample Type, Quantity & Conditions

2 ml Citrate Plasma Frozen

Special Precautions

Normal Range

By Report

Open chat
Scan the code
Hello 👋
Can we help you?