Coagulation Factors
Also known as: Factor assays; blood clotting factors; clotting factors; or by the individual factor number (Factor I, Factor II, etc.) or name (Fibrinogen, Prothrombin, etc.)
Formal name: see table
At a Glance
Why Get Tested?
To determine whether one or more of your coagulation factors are increased, decreased or absent
When to Get Tested?
When you have unexplained or prolonged bleeding, an abnormal Prothrombin Time (PT) or Partial Thromboplastin Time (PTT) test, or have a relative with a hereditary coagulation factor deficiency; you may be tested when your doctor wants to monitor the severity of a factor deficiency and/or the effectiveness of treatment
Sample Required?
A blood sample taken from a vein in your arm
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