In the method validation proceedure,lod & loq calculation we use the formulae for LOD=3.3*SD/slope and for LOQ=10*SD/slope,why we use 3.3 & 10 in the formulae?
LOD :- LOD is measured 10 times independent sample of Blank
and Student-t test of 10 times, Degree of freedom 9 (n-1)at
99% confidence label is 3.25 as per Student chart. Also
Ratio of S/N =3:1
LOQ:- LOD is regarded as the lower limit for precise
quantitative Measurement . LOQ defined as concentration
which would a produce a signal 10-12 time. At this point
standard deviation is small enough (Approximately 10-15%) so
that quantified value can be deemed reliable. Also Ratio
S/N= 10:1
| Is This Answer Correct ? | 7 Yes | 3 No |
Which water can use Hplc analysis
9 Answers BioGenomics, Dr Reddys, Reddy Labs,
What is a difference between potency and purity?
use of stry light
What are the primary standards?
what is the difference between capillary and glass column in GC
why we multiply 1000 in the determination of kf factor ?
3 Answers Stellence Pharm Science,
During Validation study, Recovery is passing at all levels but Linearity is failing. Justify?
1 Answers Mylan, Torrent Pharma,
Colorimtry
function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?
define beer-lambertslaw.
pharma industries oriented
0 Answers Apex, Micro Labs, Zydus Cadila,
What is Delay & Dead Volume