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 & Thomas M. Bailey, MD - Family Medicine
How this information was developed to help you make better health decisions.