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Antenatal red cell antibody screen
Typical UK adult rangeExpected result: Negative
What this test measures
In pregnancy the blood is screened for antibodies against red cell types the baby might have inherited from the father. Anti-D is the best known, but there are many others.
Why doctors request it
Done at booking and again at 28 weeks in every pregnancy.
What commonly pushes it up
- Antibodies from a previous pregnancy or a transfusion
- Anti-D injections given during the pregnancy, which show up as a weak anti-D
What commonly pushes it down
- A negative result is the usual finding
Everyday reasons for a value outside the range
- Low-level positives occur in the general population and are read with the clinical picture
- Thresholds differ between laboratories
About the sample
No fasting needed.
Got a report with Antenatal red cell antibody screen on it?
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Read my report freeThis is an educational summary of results you uploaded. It is not medical advice, a diagnosis or a treatment plan, and it does not replace the doctor who requested the test. If you are worried, or a result is marked outside range, discuss it with your doctor. Written and reviewed by a UK consultant physician. Reference ranges vary between laboratories.