Dotted represents the limit of detection
; dashed line represents the proposed cutoff.
mean: geometric mean; one part per billion (ppb) is the limit of detection
Table 4: Prevalence and levels of aflatoxin B1 in feeds from feed retailers in the study sites County Number of Prevalence Range (ppb) A.
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
The 0.001% NBA post-stained DNA gel gave observable bands after staining for three hours and was estimated to give a limit of detection
of about 30 ng DNA.
The performance characteristics that should be validated will vary depending on the purpose of the procedure and may include accuracy (precision and bias), limit of detection
, limit of quantitation, linearity, working range, and selectivity.
Over an 8-hour period, there was no detectable glyburide (above the 5-ng/mL limit of detection
) in any of the milk samples.
"We're working right up against the limit of detection
" of the infrared camera, he notes, so the team members have to check all the ways in which they might be fooled.
The terms "limit of detection
" or "detection limit" are not generally accepted, although they are used in some sectoral documents.
Energy dispersive x-ray spectrometry, with its poorer spectral resolution, is usually restricted to concentration levels above 0.01 mass fraction for quantitative measurements with a limit of detection
of 0.001 mass fraction, especially if peak interference occurs.
The limit of detection
for total Hg in hair varied by analytic batch; the maximum limit of detection
(0.1 parts per million [ppm]) was used in these analyses.
Their virus was well controlled, either below the limit of detection
of the test or close to the limit for those that received the IL-2 by DNA technology, or under a thousand copies in those that received the IL-2 by injection (which also worked, but not as well).
There is also a helpful chapter on the determination of the limit of detection
and the limit of determination of a given method.