Indirect Coombs (ICT) Serum Test
- Category
- Pregnancy
- Sample
- Blood sample taken from a vein in your arm
- Reports () Terms & Conditions Report time varies with time of sample collection.
- In 3 days
- Fasting
- No Fasting
- Age
- 5+ Years
What Is This Test?
The Indirect Coombs Test detects antibodies against red blood cells that are circulating freely in the blood.
Why this test is performed?
Used in pregnancy — especially in Rh-negative mothers — to look for anti-D and other antibodies that could harm the baby, and before blood transfusion to ensure compatibility.
Who should take this test?
Women planning pregnancy or who are pregnant, as advised by the gynaecologist.
Test Preparation
No fasting needed.
Medical disclaimer · for information only, not medical advice
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.
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- No fasting
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Frequently asked questions
If the mother has developed anti-D antibodies, they can cross the placenta and destroy the baby's red cells. ICT helps decide on monitoring and anti-D injections.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Blood sample taken from a vein in your arm.
Usually within 31–55 hours after the sample reaches the lab. You will receive the report online.
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