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ForumsCOA & Analytical TestingInter-lab variability in peptide testing — July 2024 Page 7

Inter-lab variability in peptide testing — July 2024

JennaRN Fri, Apr 5, 2024 at 2:00 AM 32 replies 2,715 viewsPage 7 of 7
Dr.GutHealth
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May 5, 2024 at 8:22 AM#31

Clinical perspective, offered as context rather than as advice. The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either. Those three things can all be true at once, and most arguments here are two people holding different parts of that.

Last edited: May 5, 2024 at 1:22 PM
39 12VanRx_Mike, steve_okc, dave_SLC and 36 others
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AttorneyGrant
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May 7, 2024 at 2:23 PM#32
Dr.GutHealth said:
The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.

This is my experience too, for whatever a second data point is worth. Nothing to add that would improve it.

40 13laura_annarbor, JenMemphis, pat_auckland and 37 others
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KarenAZ_mom
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May 9, 2024 at 8:22 PM#33
Dr.GutHealth said:
The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.

There is a second half to this that has not been said yet. Worth answering the question that was asked rather than the one behind it. The narrow version usually has an answer; the broad version usually does not, and answering the broad one is how a thread stops being useful.

41 14bri_stats, pete_manc_UK, anna.melb_AU and 38 others
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DataDave
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May 12, 2024 at 2:20 AM#34

One concrete data point for the thread. One practical note: write down what you did and when, before you need it. Reconstructing a timeline from memory three months later is how people end up unable to answer the one question that would have resolved it.

42 15amsterdam_pete, LondonLisa, mike_nyc and 39 others
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LondonLisa
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May 14, 2024 at 8:17 AM#35

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?

43 16SallyK_inj, CryptoCarl, MariaRD and 40 others
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