Factor IX Activity

This test measures Factor IX, also known as the Christmas factor, crucial for normal blood clot formation.

Diagnostic Value: Low activity is seen in Hemophilia B, an inherited bleeding disorder.

Clinical Significance: Used to diagnose, monitor, and manage patients with bleeding disorders or factor replacement therapy.

Symptom Correlation: Patients may have joint bleeding, prolonged bleeding after injury, or easy bruising.

The Factor IX Activity test plays a vital role in diagnosing Hemophilia B and other coagulation abnormalities.