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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingHas anyone dealt with moisture content analysis for lyophilized peptides? Page 9

Has anyone dealt with moisture content analysis for lyophilized peptides?

NauseaFreeNow Sun, Mar 16, 2025 at 5:34 AM 42 replies 1,836 viewsPage 9 of 9
ben_calgary
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Jun 15, 2025 at 6:03 AM#41
FDA_TrackerJim said:
Give anything pharmacological four weeks before you judge it, and give anything measured weekly a four-point rolling average before you call it a…

Saving this. It is the first explanation that did not require me to already understand it. I will report back once I have actually tried it.

20 18KetoKyle, CanadaChris, ZaraB_AL and 17 others
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anna.melb_AU
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Jun 19, 2025 at 7:18 AM#42

From the other side of the consultation, briefly. 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: Jun 19, 2025 at 11:18 AM
21 19paige_pharma, emma_london, tammy_FL and 18 others
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mike_mod
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Jun 23, 2025 at 8:35 AM#43

Moderator note: the sourcing question belongs in the vendor section and has been split out. Tagging this one for the weekly digest.

22 20DoseLogDan, SleepFixSam, PurityPaulOR and 19 others
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Sigma-Aldrich — Research-Grade Standards

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Dr.LeslieOBGYN
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May 2024
Dallas, TX
Jun 27, 2025 at 9:55 AM#44
anna.melb_AU said:
The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.

Coming at anna.melb_AU’s question from a different direction. Take it one variable at a time. Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent argument can untangle them after the fact.

23 21NicoleRaleigh, james_edin, FranDenver and 20 others
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dan_philly
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Jul 1, 2025 at 11:17 AM#45

Adding the numbers, since they settle part of this. Say what you would expect to see if you were wrong, before you look. It is a small discipline and it changes what you notice.

24 22EndoResFellow, PharmacoVig_BOS, SurmountFan_IN and 21 others
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