inactive

in biomolecular screening
https://doi.org/10.1351/goldbook.14150
Sample that, at the tested concentration, does not produce a response above the hit threshold in an assay.
Note: A sample may also be designated as inactive when attempts to confirm an active fail.
See also: artefact
Source:
PAC, 2011, 83, 1129. (Glossary of terms used in biomolecular screening (IUPAC Recommendations 2011)) on page 1144 [Terms] [Paper]