micromole

unitStandard termUnits

A metric unit of amount of substance equal to one millionth of a mole.

The micromole measures the amount of a chemical substance, representing 10⁻⁶ moles or roughly 6.022 × 10¹⁷ particles. It is the standard scale for biochemistry, pharmacology, and clinical diagnostics where reactions occur in highly dilute solutions. Assays and blood tests frequently report concentrations in micromoles per litre.

Heard on the job

The assay shows a peak concentration of 45 micromoles per litre, which is well within the therapeutic window.