Normal Reference Ranges
Adult
Male: 4.7 - 6.1 | Female: 4.2 - 5.4 x10^6/µL
Pediatric
4.0 - 5.5 x10^6/µL
Clinical Significance
Measures the total number of red blood cells. Interpreted alongside Hemoglobin and Hematocrit to evaluate anemia and erythrocytosis.
Causes of High
- Polycythemia vera
- Chronic hypoxia (COPD, High altitude)
- Dehydration
- Congenital heart disease
Causes of Low
- Anemia
- Hemorrhage
- Bone marrow failure
- Hemolysis
- Chronic kidney disease