Called erythrocytosis, an elevated red blood cell count means that the bloodstream has too many red blood cells, according to Mayo Clinic. Erythrocytosis develops for various reasons, including the body's need to compens... More »

Elevated red blood cell counts may occur in response to dehydration, which decreases blood plasma levels, according to Mayo Clinic. Kidney, heart and bone marrow disease may also increase red blood cell production. This ... More »

An elevated RBC level is diagnosed with a test called the RBC count, explains MedlinePlus. The test determines how many red blood cells are present in a sample of blood. More »

www.reference.com Health Medical Ranges & Levels

A red blood cell count indicates how many red blood cells a person has, according to MedlinePlus. Doctors use it to diagnose conditions such as anemia, as well as other medical conditions. A normal range of red blood cel... More »

The range for a normal red blood cell count is 4.5 to 5.5 million cells per microliter for men and 4 to 5 million cells per microliter for women, according to WebMD. Healthy children and babies should typically have betw... More »

A normal red blood cell count in a urine test is 4 red blood cells or less per high power field, according to MedlinePlus. This is expressed as 4 RBC/HPF. It is normal for results to vary slightly from lab to lab. More »

A normal red blood cell count for males is 4.7 to 6.1 million cells per microliter, and a normal count for females is 4.2 to 5.4 million cells per microliter, states MedlinePlus. Normal ranges may vary from lab to lab, a... More »