Estimation of fetal hemoglobin is done by?

Estimation of fetal hemoglobin is done
by ?
a) Gerhard test
b) Kleihauser-Betke Acid Elution Test
c) Grinders test
d) Simpsons test
Correct Answer - B
Ans. B. Kleihauser-Betke Acid Elution Test
Modified Keihauser-Betke Acid Elution test: it k used to note the
number fetal red cells per 0 low power fields.
If there are 80 fetal erythrocyte in 50 low power fields in maternal
peripheralblood films, it presents the transplacental hemorrhage of 4
ml of fetal blood