Question

How to know your blood group without blood test?

Answer 1

. Do a blood test: get a blood test done either at your doctor’s office or a health clinic.
2. Figure it out at home: use your parents’ blood type to narrow it down, call your doctor and ask, or get a blood typing kit online or from a pharmacy to determine your blood type at home.
3. Get creative: donate blood or look for your information online at your county’s blood service center website if you already have.

Answer 2

Hi friend here is your answer

Ask your parents for their blood type that narrow down the possibilities in most cases this is only enough to guess using online blood type calculator


It is like this

O parent x O parent = O childO
parent x A parent = A or O child
O parent x B parent = B or O child
O parent x AB parent = A or B child
A parent x A parent = A or O child
A parent x B parent = A, B, AB or O child
A parent x AB parent = A, B or AB child
B parent x B parent = B or O child
B parent x AB parent = A, B or AB child
AB parent x AB parent = A, B or AB child

Blood types also include an "Rh factor" (+ or -). If both of your parents have an Rh- blood type (such as O- or AB-), you are also Rh-. If one or both of your parents are Rh+, you cannot tell whether you are + or - without a test


Hope it helps you.................!!