An international unit is an arbitrary amount of a substance agreed
upon by scientists and doctors. A milliliter is a measure of volume that is
equal to one-thousandth of a liter (or slightly less than a quarter of a
Some medical tests report results using international units (IU)
per milliliter (mL).
Anne C. Poinier, MD - Internal Medicine & Martin J. Gabica, MD - Family Medicine
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