detection limit

in analysis
https://doi.org/10.1351/goldbook.D01629
The minimum single result which, with a stated probability, 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
Source:
PAC, 1989, 61, 1657. 'Nomenclature for automated and mechanised analysis (Recommendations 1989)' on page 1663 (https://doi.org/10.1351/pac198961091657)
See also:
PAC, 1991, 63, 1541. 'Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)' on page 1553 (https://doi.org/10.1351/pac199163101541)