International Units Per Litre (IU/L)

An international unit is an arbitrary amount of a substance agreed upon by scientists and doctors; a litre is a measure of volume that is slightly greater than a quart.

Some medical tests report results using international units (IU) per litre (L).

Is it an emergency?

If you or someone in your care has chest pains, difficulty breathing, or severe bleeding, it could be a life-threatening emergency. Call 9-1-1 or the local emergency number immediately.
If you are concerned about a possible poisoning or exposure to a toxic substance, call Poison Control now at 1-800-567-8911.

Thanks to our partners and endorsers: