Blood Group Compatibility Test: 

Every couple should go with a blood group compatibility test before marriage. If you prioritise matching Kundali, then above, this test is more critical than that kundali test. By doing this test, one would be able to know about the Rh factor. Every couple should have the same Rh factor to conceive a perfect baby without any defects. If it does not match, then you can have problems in your pregnancy. This will affect your child the most. In case of mismatching, a baby's blood cells can be destroyed through the antibodies present in the blood of a pregnant woman.