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ForumsCOA & Analytical TestingInter-lab variability in peptide testing — July 2024 Page 8

Inter-lab variability in peptide testing — July 2024

Dr.GastroMayo Fri, Sep 19, 2025 at 1:04 AM 41 replies 1,493 viewsPage 8 of 9
BariatricNurseD
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Feb 2, 2026 at 7:57 PM#36
dan_philly said:
If you are going to change something, change one thing and give it long enough to express itself.

Genuinely useful, thank you. I had the facts and not the framework. I will report back once I have actually tried it.

25 0tony_orlando, Dr.NephBHM_UK, kim_atl_prep and 22 others
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LibrarianMeg
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Feb 10, 2026 at 7:55 AM#37

Adding the clinical framing, because it changes how the question reads. 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.

Last edited: Feb 10, 2026 at 9:55 AM
24 24PharmD_Rodriguez, julia.endo, JessicaM_2024 and 21 others
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lori_vegas
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Feb 17, 2026 at 7:49 PM#38
LibrarianMeg said:
Worth answering the question that was asked rather than the one behind it.

Second this. Posting only so the count is not one.

23 23oliver_london, tane_welly, Dr.PathRoch and 20 others
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maria_elpaso
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Feb 25, 2026 at 7:38 AM#39
LibrarianMeg said:
Worth answering the question that was asked rather than the one behind it.

Coming at LibrarianMeg’s question from a different direction. The distinction that resolves most of these threads is between what is true on average and what is true for one person. Both are real; they answer different questions and get quoted as if they were the same one.

22 22HPLC_Greg, LibrarianMeg, bri_stats and 19 others
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PharmacoVig_BOS
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Mar 4, 2026 at 7:23 PM#40

The figures, for anyone assembling their own picture. Worth stating the units and the reference range whenever you post a number here. A large fraction of the apparent disagreement in these threads is two people using different units and both being right.

Last edited: Mar 4, 2026 at 10:23 PM
50 0LabKate, kate.chem, DataDave and 47 others
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