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Intersection · Analytics × stability-indicating method

Analytics topics tagged stability-indicating method

Topics in Analytics carrying the tag stability-indicating method. A method that can separate the compound from its degradation products.

20 topics

TopicParticipantsRepliesViewsActivity
Revisiting: Spike-and-recover accuracy for a peptide assay
Revisiting: Spike-and-recover accuracy for a peptide assay — setting out what I have, and where I think it stops being reliable. I would like to understand what this number means before I repeat it anywhere.…
SCVKEC 2 6.8k 21h
Forced degradation studies: designing one that is informative
Posting this under the heading it deserves: Forced degradation studies: designing one that is informative Everything below is what sits behind that. Working through the identity arithmetic and I would like it…
MPTIEMHKSL+100 106 35k 2d
Validating a method you did not develop
On the subject in the title: Validating a method you did not develop Working notes rather than a conclusion. I would like to understand what this number means before I repeat it anywhere. A VendorInvestigate…
CRSOSSSVJW+10 14 15k 3mo
Sample handling between despatch and injection
Sample handling between despatch and injection Writing it up because I had to work it out twice and would rather nobody else did. Posting the method first, because I know what the first three replies will…
KREHSSNCNA+63 68 2.4k 3mo
Spike-and-recover accuracy for a peptide assay
Posting this under the heading it deserves: Spike-and-recover accuracy for a peptide assay Everything below is what sits behind that. A documentation question rather than an analytical one. I have a…
VSRLMPMOOB+121 126 1.5k 4mo
About the Method validation category
Specificity, linearity, precision, accuracy, robustness, system suitability, and why two labs disagree. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is…
KTVPAKAJV+1 5 468 5mo
Why one laboratory's 98.4% and another's 96.1% may not contradict — one year on
Asking directly, because I could not find a straight answer: Why one laboratory's 98.4% and another's 96.1% may not contradict — one year on Working through the identity arithmetic and I would like it…
MSFKJBMRCR+10 14 13k 5mo
Revisiting: Sample handling between despatch and injection
Posting this under the heading it deserves: Revisiting: Sample handling between despatch and injection Everything below is what sits behind that. Posting the method first, because I know what the first three…
DVEAGTEMNG+5 9 1.1k 6mo
Why one laboratory's 98.4% and another's 96.1% may not contradict
Why one laboratory's 98.4% and another's 96.1% may not contradict I have a specific reason for asking rather than idle curiosity, and the context is below. A documentation question rather than an analytical…
LCMEHMLPFC+28 37 457 7mo
An inter-laboratory comparison on one lot, tabulated — what changed since
An inter-laboratory comparison on one lot, tabulated — what changed since — setting out what I have, and where I think it stops being reliable. I would like to understand what this number means before I…
IADCKTFHK+24 28 3.3k 7mo
Robustness: the parameters worth deliberately varying
Robustness: the parameters worth deliberately varying Writing it up because I had to work it out twice and would rather nobody else did. A documentation question rather than an analytical one. I have a…
EFBVPRPOL+53 57 664 8mo
LOD and LOQ: definitions people get wrong
LOD and LOQ: definitions people get wrong — setting out what I have, and where I think it stops being reliable. A documentation question rather than an analytical one. I have a certificate in front of me that…
EISFCN 2 43k 8mo
Forced degradation studies: designing one that is informative — does this still hold?
The question in the title: Forced degradation studies: designing one that is informative — does this still hold? I will give what I have already checked below so nobody repeats it. A documentation question…
RJAKNKISC+37 41 1.2k 12mo
Repeatability versus intermediate precision
Repeatability versus intermediate precision — setting out what I have, and where I think it stops being reliable. Posting the method first, because I know what the first three replies will otherwise be.…
LSKAILWNO+119 134 34k 13mo
Relative retention time as a better inter-laboratory comparator
On the subject in the title: Relative retention time as a better inter-laboratory comparator Working notes rather than a conclusion. Posting the method first, because I know what the first three replies will…
MCVKSKHVCL+7 11 28k 14mo
When to suspect the method rather than the sample
When to suspect the method rather than the sample — that is the question, and I have not found it answered plainly anywhere I have looked. Posting the method first, because I know what the first three replies…
MMCCYMRMBJ+109 115 63k 15mo
Validating a method you did not develop — does this still hold?
Validating a method you did not develop — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. I would like to understand what this number means…
AAEFNRRBFE+128 148 47k 16mo
What a stability-indicating method is and how you demonstrate one — one year on
What a stability-indicating method is and how you demonstrate one — one year on I have a specific reason for asking rather than idle curiosity, and the context is below. A documentation question rather than…
FPHETPNNCG+100 112 15k 19mo
Coming back to: When to suspect the method rather than the sample
When to suspect the method rather than the sample I have a specific reason for asking rather than idle curiosity, and the context is below. Posting the method first, because I know what the first three…
OVGBFRSLRM+116 135 42k 19mo
Relative retention time as a better inter-laboratory comparator — does this still hold?
Relative retention time as a better inter-laboratory comparator — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. A documentation question…
EARFWNFWOO+11 15 21k 21mo