bioassay

https://doi.org/10.1351/goldbook.B00651
A procedure for determining the concentration or biological activity of a substance (e.g. vitamin, hormone, plant growth factor, @A00383@) by measuring its effect on an organism or tissue compared to a standard preparation.
Source:
PAC, 1992, 64, 143. (Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)) on page 147 [Terms] [Paper]