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

Causes of an elevated white cell count, or leukocytosis, include diseases of the bone marrow or the immune system, reactions to drugs and leukemia, says Mayo Clinic.The patient may also be fighting off a viral or bacteri... More »

Several medical conditions ヨ dehydration, cigarette smoking and certain medications ヨ may cause high red blood cell counts, according to MedlinePlus. To intentionally increase low red blood cell counts as treatment for a... More »

A high red blood cell count may result from cigarette smoking, congenital heart disease, right-sided heart failure, dehydration or a kidney tumor, notes MedlinePlus. Low levels of oxygen in the blood, pulmonary fibrosis ... More »

www.reference.com Health Medical Ranges & Levels

An elevated red blood cell count is associated with dehydration, congenital heart disease, kidney tumors, bone marrow diseases and scarring of the lungs, reports MedlinePlus. Red blood cells contain hemoglobin, a protein... More »

One cause of low red blood cell count is pregnancy, but this is normal, according to Mayo Clinic. However, among the many other conditions and diseases that can cause a low red blood cell count are cancer, aplastic, vita... More »