Serum or plasma concentration of a substance related to donor red blood cell compatibility screening (e.g., antibody detection for transfusion safety)

Why This Test Might Be Ordered

Your healthcare provider may order this test if you’re a blood donor or if you’re scheduled for a blood transfusion. It’s also used in certain medical evaluations to assess immune responses related to red blood cell compatibility.

What to Expect Before the Test

You’ll typically provide a blood sample by venipuncture. The test involves collecting serum or plasma, which is then analyzed for specific antibodies that could affect blood compatibility.

What the Test Measures

The test detects the presence and concentration of antibodies (like anti-D or other red blood cell antibodies) that could cause adverse reactions if they react with donor red blood cells during a transfusion.

How the Results Are Used

Results help determine if you’re a suitable donor or if additional testing is needed before a blood transfusion. Positive results may require further evaluation to rule out specific antibody profiles.