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ForumsCOA & Analytical TestingInter-lab variability in peptide testing — July 2024 Page 10

Inter-lab variability in peptide testing — July 2024

PedsEndoPhilly Fri, Jan 31, 2025 at 9:32 PM 52 replies 2,419 viewsPage 10 of 11
sarah.morrison
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Apr 10, 2025 at 10:38 PM#46

A narrower follow-up, since the general answer is now clear:

Did your prescriber agree with that reading, and if not what was their objection?

Last edited: Apr 10, 2025 at 11:38 PM
30 3josh_phd_bmore, roxy_nash, tony_orlando and 27 others
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PedsEndoPhilly
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Apr 13, 2025 at 8:24 AM#47

Reporting back.

Update — I was wrong in the opening post, specifically about the direction. Correcting it here rather than editing it away.

Last edited: Apr 13, 2025 at 1:24 PM
31 4wendy_avl, jason_paloalto, Dr.LeslieOBGYN and 28 others
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sarah_TO
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Apr 15, 2025 at 6:09 PM#48
TrialTracker_MD said:
The boring version of this is the one that works, and the boring version is: measure a baseline, change one variable, wait, measure again under the…

Agreed, and one caution: a single measurement is not a measurement. Anything that moves day to day needs a trend before it means anything at all.

32 5GraceAZ_72, carl_compliance, DanielChem_CHI and 29 others
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pete_nash
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Apr 18, 2025 at 3:52 AM#49
TrialTracker_MD said:
The boring version of this is the one that works, and the boring version is: measure a baseline, change one variable, wait, measure again under the…

This is exactly what I could not find anywhere else. Adding it to my notes with a link back to this thread.

Last edited: Apr 18, 2025 at 9:52 AM
33 6SarahChen_PharmD, sarah.morrison, NeuroNate and 30 others
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roxy_nash
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Apr 20, 2025 at 1:34 PM#50

From the other side of the consultation, briefly. If two explanations both fit, the useful question is which one predicts something the other does not. That is answerable; arguing about which sounds more plausible is not.

5 3kim_atl_prep, sarah_TO, wendy_avl and 2 others
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