CLINICAL MEDICINE

MEDICINE

HAEMATOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many blood groups exist?
A
4
B
3
C
2
D
6
E
8
Explanation: 

Detailed explanation-1: -There are 4 main blood groups (types of blood) – A, B, AB and O. Your blood group is determined by the genes you inherit from your parents. Each group can be either RhD positive or RhD negative, which means in total there are 8 blood groups.

Detailed explanation-2: -In addition to the A and B antigens, there is a protein called the Rh factor, which can be either present (+) or absent (–), creating the 8 most common blood types (A+, A-, B+, B-, O+, O-, AB+, AB-).

Detailed explanation-3: -Each blood type also is identified as either Rh positive or negative (the Rh factor being an inherited blood group on red blood cells). Approximately 85% of the U.S. population is Rh-positive (i.e., O+, A+, B+, AB+). Those who do not have the Rh factor are Rh-negative (O-, A-, B-, AB-) and are quite rare.

Detailed explanation-4: -O positive: 35% O negative: 13% A positive: 30% A negative: 8% B positive: 8% B negative: 2% AB positive: 2% AB negative: 1%

Detailed explanation-5: -A+ (A positive) if you have A and rhesus antigens. A− (A negative) if you have A antigens but don’t have rhesus antigens. B+ (B positive) if you have B and rhesus antigens. B− (B negative) if you have B antigens but don’t have rhesus antigens. AB+ (AB positive) if you have A, B and rhesus antigens. More items •17-Jul-2018

There is 1 question to complete.