An international unit is an arbitrary amount of a substance agreed upon by scientists and doctors; a liter is a measure of volume that is slightly greater than a quart.
Some medical tests report results using international units (IU) per liter (L).
|Primary Medical Reviewer||Anne C. Poinier, MD - Internal Medicine|
|Specialist Medical Reviewer||Thomas M. Bailey, MD - Family Medicine|
|Last Revised||May 6, 2011|
WebMD Medical Reference from Healthwise