Hematocrit in the blood is the proportion of the blood that consists of red blood cells, by volume. A low hematocrit level may signal anemia, or other conditions such as loss of blood, nutritional deficiency, bone marrow problems, and abnormal hematocrit. High hematocrit levels may be due to chronic smoking, living at high altitudes, dehydration, or other conditions and diseases. Read more: Hematocrit Article
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