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Red Blood Count (RBC)

The number of red blood cells per microliter is part of the routine complete blood count (CBC). It is measured directly with an automated hematology instrument and used in the calculation of the red cell indices. Red blood cell count is one of the parameters used to evaluate anemia. Red cell count may decrease as much as 0.3 x 106/uL with bed rest.

Adult reference range is 4.00-5.00 million/uL for females and 4.31 - 5.84 million for males.

Specimen requirement is one lavender top (EDTA) tube of blood. See Complete Blood Cell Count (CBC) for more information. 

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