Skip to content

Category: Units

Explore our medication guides and pharmacology articles within this category.

Does 1 IU equal 1 mL? The Critical Difference Between Units in Pharmacology

4 min read
According to the American Diabetes Association, a concentration of U-100 insulin means there are 100 units (IU) in 1 mL, clearly demonstrating that **Does 1 IU equal 1 mL?** The answer is no, because these units measure entirely different properties of a substance. The International Unit (IU) is a measure of biological activity, while a milliliter (mL) is a measure of volume.