What is millimolar?

Millimolar (mM) is a unit of concentration used in chemistry and biology to express the amount of a substance dissolved in a specific volume of a solution.

One millimolar (1 mM) is equivalent to having one millimole (1 mmol) of a substance dissolved in one liter (1000 mL) of solution.

This unit is commonly used to measure concentrations of ions, molecules, and compounds in biological and chemical systems, including in the fields of pharmacology, physiology, and biochemistry.

For example, the normal blood glucose level in the human body is around 5 mM, while the therapeutic concentration range of a certain drug may be between 50 and 100 mM.

Overall, millimolar is a useful unit of concentration that allows scientists to describe the amount of a substance relative to the amount of solution in which it is dissolved.