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A Hematocrit, or HCT, is a simple blood test done to determine the proportion of cells and fluid in the blood.

A low hematocrit may indicate the presence of one or more of these:

A high HCT may indicate the presence of one or more of these:

Much of this information came from http://webmd.lycos.com/content/asset/adam_test_hct This node is for informational purposes only and should not be used for diagnosis.