What is this test?
A Coombs test detects antibodies or immune-system components associated with red blood cells. The catalogue does not specify whether this is the direct or indirect version.
Why might it be ordered?
- To assess a possible immune reaction involving red blood cells.
- Before or after transfusion, depending on the clinical situation.
- During pregnancy or an anaemia assessment when the test is clinically indicated.
What sample is needed?
A blood specimen is used. Confirm whether a direct or indirect Coombs test was ordered because they answer different questions.
How should you prepare?
No special dietary preparation is stated. Report recent transfusion, pregnancy, and medicines, but do not stop treatment on your own.
How should you understand the result?
The result is usually reactive or non-reactive for the specific test version. Its meaning depends on the reason for testing and other blood findings.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.