

RBC count is used to know the overall health status, the possible existence of an anemia, a general disease or a cancer. Why normal ranges can differ across different labs? Newborns (up to 14 days old): 4.1 – 5.7 million/µl (microliter).Babies from 2 weeks old to 4 weeks old: 3.1 – 4.8 million/µl (microliter).Babies from 5 weeks old to 7 weeks old: 2.9 – 4.2 million/µl (microliter).Babies from 8 weeks old to 5 months old: 3.4 – 4.8 million/µl (microliter).

Babies from 6 months old to 2 years old: 3.9 – 5.1 million/µl (microliter).Children of 2 years old: 3.8 – 5 million/µl (microliter).Children from 3 to 5 years old: 4.0 – 5.1 million/µl (microliter).Children from 6 to 10 years old: 4.1 – 5.2 million/µl (microliter).Children from 11 to 14 years old: 4.1 – 5.3 million/µl (microliter).Girls from 15 to 17 years old: 3.8 – 5 million/µl (microliter).Boys from 15 to 17 years old: 4.3 – 5.7 million/µl (microliter).Adult women: 4 - 5.5 million/µl (microliter).Adult men: 4.5 – 6.2 million/µl (microliter).RBC count ranges (Red Blood Cells or erythrocytes) depend on gender and age according to the following table: What is the normal count of RBC in the blood?
