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References in periodicals archive ?
Like most techniques limit of detection for NAA depends on analyte, matrix, standard used for analysis and experimental conditions or system used for counting.
While the CAP checklist does not list specific criteria, we applied our scoring criteria and found that 26 of the 88 reports containing the LDT language (30%) did not contain all necessary components, with 10 lacking adequate methods, 15 lacking performance characteristics (defined here as presence of limit of detection, listing pertinent variants not detected, or other assay limitations as described in the Assay Limitations" section), and 1 lacking both methods and performance characteristics.
It is also observed that selecting an ionic emission line of europium more is beneficial than the neutral emission line for calibration and calculating the limit of detection.
44 Limit of detection (ng/spot), n = 3 45 105 Limit of quantification (ng/spot), n = 3 125 350 Instrumental precision (RSD), n = 6 0.
The limit of detection is calculated to be around 10 nanomolar through this method.
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.
Bile acids, globulins, and sodium concentrations were below the limit of detection in all diluted samples and were not statistically analyzed.
Literature about methylene blue presents contradictory reports about its limit of detection of DNA, with reports typically suggesting at least one tenth the sensitivity of ethidium bromide (see, for example, Madden 2006 and Brown 2000).
7% of four replicate analyses at 50 ng/g and a calculated average limit of detection of 2.
Only a fraction of that contains information about possible analytical sensitivity or limit of detection.
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.