limit of detection


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limit of detection

[¦lim·ət əv di′tek·shən]
(analytical chemistry)
The quantity or concentration that represents the smallest measure of an analyte that can be detected with reasonable certainty by a given analytical procedure.
References in periodicals archive ?
The level of heroin observed exceeded the limit of detection in only 1 case after working at the clinic and after contact with a drug user (see Fig.
In total, 512 samples from 282 farmers were analysed and 39.7% of these had levels above the limit of detection, and 10.4% exceeded 50 ppt.
Limit of detection (LOD) is the lowest possible concentration of europium that can be identified in the glass sample.
Major Finding: A novel, wholly oral treatment regimen of 1,000 mg RG7128 plus 900 mg danoprevir twice daily resulted in five of eight treatment-naive patients and two of eight previous null responders with chronic hepatitis C reaching HCV RNA concentrations that were below the limit of detection (less than 15 IU/mL) within 14 days.
Their results showed a limit of detection of 40 ng DNA for NBA (Adkins & Burmeister 1996).
DuPont Capstone products are based on short-chain chemistry and provide a step-change reduction in trace impurities below the limit of detection, offering customers the same or better performance than their predecessors without compromise in fluorine efficiency, according to the company.
Ametek says it has a limit of detection of 5 PPMV and an operating range of 5 to 2500 PPMV.
In terms of sensitivity, the SINDIE offers users a Limit Of Detection (LOD) of 0.6 ppm, and a dynamic range from 3000 ppm--significantly higher than competing technologies.
In the interim period, whilst the search goes on for a harmonised methodology, the member states agreed that the limit of detection for most illegal dyes similar to Sudan 1 should be 0.51 mg/kg, and that all food products prepared from spices containing illegal dyes above this level should be taken off the market.
Limit of detection is the lowest concentration or smallest amount of analyte that can be statistically differentiated from the analyte-free sample matrix.
The limit of detection of the assay was 80 PFU/mL (1.9 [log.sub.10] PFU/mL).
Red Mills boss Joe Connolly made it clear that he would fight all the way to get the same cut-off point, or 'limit of detection' that was introduced by the Jockey Club in March last year, namely 50 nanograms per millilitre.