Hematocrit Test measures the proportion of red blood cells in your blood.

What is it used for?

A hematocrit test is often part of a complete blood count (CBC).

Measuring the proportion of red blood cells in your blood can help your doctor make a diagnosis or monitor your response to a treatment.

So it may be used to help diagnose blood disorders, including anemia & polycythemia,


Results

Results from your hematocrit test are reported as the percentage of your blood volume that's composed of red blood cells. 

It can be measured or calculated as

Hct = (RBC × MCV)/10

Generally, a normal range is considered to be:

For men, 38.3 to 48.6 percent
For women, 35.5 to 44.9 percent

A lower than normal hematocrit can indicate:

anemia

A large number of white blood cells due to long-term illness, infection or a WBC disorder, Vitamin or mineral deficiencies


A higher than normal hematocrit can indicate:

Your body is making too many red blood cells, which may be caused by:
Lung disease
Congenital heart disease
Heart failure
Polycythemia

Your blood plasma level is too low, which may be caused by:.
Dehydration,
Shock

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