FACTOR XIII

This Test is a diagnostic blood test that measures the level and activity of Factor XIII, an important clotting factor responsible for stabilizing blood clots. Unlike other clotting factors, Factor XIII helps strengthen and maintain the clot after it has formed.

Deficiency of Factor XIII can lead to delayed bleeding, poor wound healing, and recurrent bleeding episodes. This test is often recommended when routine coagulation tests (like PT and APTT) are normal, but bleeding symptoms persist.

The purpose of the test is to:

• Measure Factor XIII activity or levels
• Assess clot stability
• Diagnose rare bleeding disorders
• Investigate unexplained bleeding with normal routine tests

FACTOR XIII Test

The Factor XIII test evaluates the function or activity of Factor XIII, a blood-clotting protein that helps strengthen and stabilize blood clots. Unlike many other clotting factors, Factor XIII deficiency may occur even when routine clotting tests such as PT and aPTT are normal.

This test is useful when there is unexplained bleeding, delayed bleeding after injury or surgery, poor wound healing, recurrent pregnancy loss, or suspicion of an inherited Factor XIII deficiency. It can help healthcare providers identify problems with the final stage of clot stabilization.

This Test is Recommended for Individuals:

• Individuals with unexplained or recurrent bleeding
• People with excessive or delayed bleeding after surgery, injury, or childbirth
• Individuals with suspected Factor XIII deficiency
• People with poor or delayed wound healing
• Individuals with recurrent unexplained pregnancy loss, when clinically indicated
• Patients with a strong family history of rare bleeding disorders
• Individuals who have bleeding symptoms despite normal PT and aPTT results
• Patients whose healthcare provider recommends further evaluation of a suspected clotting-factor disorder

FAQs

1. What does the Factor XIII test measure?
The test evaluates the activity or function of Factor XIII, which helps stabilize blood clots after they form. Reduced Factor XIII activity can lead to abnormal bleeding.

2. Can Factor XIII deficiency occur with normal PT and aPTT?
Yes. Factor XIII acts at a later stage of clot formation, so routine PT and aPTT tests can sometimes be normal even when Factor XIII deficiency is present.

3. What are the symptoms of Factor XIII deficiency?
Symptoms may include delayed bleeding after injuries or surgery, easy bruising, recurrent bleeding, poor wound healing, and recurrent pregnancy loss in some affected individuals. The severity can vary depending on the degree of Factor XIII deficiency.