Vitamin K-dependent clotting factors (serum/plasma) profile

What This Test Measures

Vitamin K is essential for producing several clotting factors (Factors II, VII, IX, and X) in your liver. This test evaluates the concentration of these proteins in your blood, often ordered to assess bleeding disorders, liver function, or vitamin K status. Some factors may also be measured separately (e.g., Factor VII or X) depending on clinical context.

Why It’s Done

Doctors may request this test if you have symptoms like easy bruising, excessive bleeding, or if you’re taking medications that affect clotting (e.g., warfarin). It can also help diagnose conditions like vitamin K deficiency, liver disease, or inherited clotting disorders.

Sample Preparation

A blood sample is drawn from a vein, usually in the arm. The blood is processed to separate serum or plasma for testing. Avoid eating fatty foods or taking vitamin K supplements 24 hours before testing, as they may affect results.

Common Conditions Monitored

Low levels of these factors may suggest bleeding risks, liver disease, or vitamin K deficiency. High levels could indicate conditions like multiple myeloma or certain cancers that produce excess proteins.