✍️ Written by the MedTestBD Editorial Team · Last reviewed: July 2026
What is a Blood Grouping & Rh Factor Test?
The Blood Grouping and Rh Factor test determines your ABO blood group (A, B, AB, or O) and whether you are Rh positive or Rh negative. This information is essential before any blood transfusion or surgery, during pregnancy, and for organ transplantation. Receiving the wrong blood type can cause a life-threatening reaction, which is why this test is one of the most critical safety tests in medicine.
Why is the Blood Grouping & Rh Factor Test Done?
- Before surgery or any procedure that may require a blood transfusion
- During pregnancy — an Rh-negative mother carrying an Rh-positive baby needs anti-D treatment to prevent complications in future pregnancies
- Before organ or bone marrow transplantation
- For blood donation — donors must be typed before giving blood
- In emergencies requiring urgent blood transfusion
- As part of a routine health check-up or pre-marital screening
ABO & Rh Blood Groups
| Blood Group | Can Donate To | Can Receive From |
|---|---|---|
| A+ | A+, AB+ | A+, A−, O+, O− |
| B+ | B+, AB+ | B+, B−, O+, O− |
| O+ | A+, B+, O+, AB+ | O+, O− |
| AB+ | AB+ only | All groups (universal recipient) |
| O− | All groups (universal donor) | O− only |
In practice, hospital transfusion services always perform a full crossmatch before giving blood — never rely on a blood group card alone in an emergency without proper verification.
How to Prepare for the Blood Grouping Test
- No fasting or special preparation is required
- Inform the lab if you have recently received a blood transfusion or organ transplant, as this can temporarily affect results
- Inform the lab if you are pregnant
- Bring any previous blood group records you have — it is useful for cross-verification
- A simple blood sample is drawn from a vein in your arm
Blood Grouping Test Price in Bangladesh
Blood grouping and Rh factor test prices vary between diagnostic centers across Bangladesh. Compare blood grouping test prices on MedTestBD →
⚠️ This information is for general reference only. Always consult a qualified physician before undergoing any medical test.
