functional assay

https://doi.org/10.1351/goldbook.14138
Assay in which the biological or physiological activity of the target is measured.
Example: An assay in which an agonist stimulates, in receptor-transfected cells, the production of a second messenger, such as cAMP or \(\ce{Ca^{2+}}\), which is detected with a fluorescence readout.
Source:
PAC, 2011, 83, 1129. (Glossary of terms used in biomolecular screening (IUPAC Recommendations 2011)) on page 1141 [Terms] [Paper]