detection limit

in analysis
The minimum single result which, with a stated @P04855@, can be distinguished from a suitable blank value. The limit defines the point at which the analysis becomes possible and this may be different from the lower limit of the determinable analytical range.
See also:
limit of detection (in analysis)
relative detection limit
PAC, 1989, 61, 1657. (Nomenclature for automated and mechanised analysis (Recommendations 1989)) on page 1663 [Terms] [Paper]