GDF15 (Growth Differentiation Factor 15) [Mass/Volume] in Serum or Plasma by Immunoassay

What Is Being Measured

GDF15 (growth differentiation factor 15) is a protein that many types of cells produce when they are under stress, injured, or not getting enough oxygen or nutrients. It is sometimes found in higher amounts in the blood in various medical conditions, so doctors and researchers use this test to measure its level.

How the Test Works

A blood sample is collected from a vein in your arm and sent to a laboratory. In the lab, a specific immunoassay method is used to detect and measure the amount of GDF15 present in the serum or plasma portion of your blood. The result is usually reported as a concentration.

What to Expect

Collecting the blood sample is quick and similar to any routine blood draw. You may feel a brief pinch when the needle goes in, and a small bandage is placed afterward. For many blood tests, fasting or other preparation may be requested, so follow any instructions your healthcare provider gives you.

Results and What They Mean

Your result is compared with a reference range that the performing laboratory provides, because ranges can differ between labs and methods. GDF15 levels can rise in many situations, so a single result is generally interpreted alongside your symptoms, medical history, and other test results rather than on its own.