Question

# Which of the following measurements are not used to calculate the red blood cell indices? A)...

Which of the following measurements are not used to calculate the red blood cell indices?

A) RBC count

B) Hemoglobin concentration

C) Hematocrit

D) WBC count

The answer is d) WBC count

Red blood cell indices is defined as the part of complete blood count where it is used to find information about the hemoglobin content and size of the RBC.

It is used to diagnose anaemia.

The various red blood cell indices are

• MCV( Mean Corpuscular Volume)
• MCH(Mean Corpuscular Hemoglobin )
• MCHC( Mean Corpuscular Hemoglobin Concentration)

1. MCV is the average red blood cell size

MCV= Hct x 10/ RBC (84-96 fL)

Hct- hematocrit

RBC - red blood cells

2. MCH is hemoglobin amount per red blood cell

MCH = Hb x 10/ RBC( 26-36 pg )

Hb - hemoglobin

3. MCHC is the amount of hemoglobin relative to the size of the cell per red blood cell.

MCHC = Hb x 10/ Hct

Hb -hemoglobin

Hct - hematocrit

In the above equations of MCV, MCH and MCHC, red blood cell, hemoglobin and hematocrit is mentioned.

WBC is not mentioned anywhere in red blood cell indices. Therefore the answer is WBC count