Potential causes of a high hematocrit level include dehydration, smoking, living at high altitudes, lung disease, congenital heart disease, polycythemia vera or a erythropoetin-producing tumor in the kidney. Dehydration ... More »

Potential causes for a high hematocrit count include congenital heart conditions, bone marrow diseases, scarring or thickening of the lungs, and dehydration, according to MedlinePlus. The hematocrit count measures the pe... More »

www.reference.com Health Medical Ranges & Levels

High hematocrit scores are symptomatic of several serious conditions, including congenital heart disease, heart failure on the right side, lung scarring, bone marrow disease and blood abnormalities, according to MedlineP... More »

www.reference.com Health Medical Ranges & Levels

Elevated hematocrit levels may be caused by dehydration; lung disease or smoking; or congenital heart disease, according to the American Association for Clinical Chemistry. Polycythemia vera, a condition where the body o... More »

Potential causes for a high hematocrit count include congenital heart conditions, bone marrow diseases, scarring or thickening of the lungs, and dehydration, according to MedlinePlus. The hematocrit count measures the pe... More »

www.reference.com Health Medical Ranges & Levels

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

A high level of calcium in the blood, or hypercalcemia, indicates underlying conditions, such as hyperparathyroidism; lung diseases and cancers; dehydration; side effects of medications, such as thiazide diuretics; and h... More »