Question

Which type of blood cell is the most abundant in the human body? Lymphocytes, basophils, erythrocytes, neutrophils, or platelets?

Answer 1

Here is a chart showing the number of blood cells in per mL blood in human body :

Parameter	Normal range (men)	Normal range (women)
Hematocrit	42-52%	36-48%
Ferritin 9serum)	30-400 ng/DL	13-150 ng/mL
Iron (serum)	60-170 $\mu g/dL$	60-170 $\mu g/dL$
Reticulocytes count	0.5 % - 1.5 %	0.5 % - 1.5 %
White blood cell (WBC)	5000-10000/mL	5000-10000 /mL
Red blood cell (RBC)	$4.5-5.5\times {10}^6/mL$	$4.0-5.0\times {10}^6/mL$
Platelet	$1.4-4.0\times {10}^5/mL$	$1.4-4.0\times {10}^5/mL$
TIBC	$250-370\mu g/dL$	$250-370\mu g/dL$

From the chart we can see the most abundant cell in human body is Erythrocytes (red blood cells) : 4.5 - 5.5 millions per mL.
Platelets are 1,40,000 - 4,00,000 per mL.
White blood cells are 5,000 - 10,000 per mL. Neutrophils, lymphocytes and basophils are all included in this number.