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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingMass spectrometry for peptide identity verification — March 2026 Page 8

Mass spectrometry for peptide identity verification — March 2026

TirzTom Fri, Jan 9, 2026 at 3:52 PM 40 replies 1,536 viewsPage 8 of 8
jim_asheville
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Feb 28, 2026 at 12:04 AM#36
LabKate said:
Keep the original post as written when you update it, and add the correction underneath.

Thank you — that is the clearest version of this I have read, and I have read a lot of them. Adding it to my notes with a link back to this thread.

44 17MikeKY_noInsulin, Dr.RaviCardio, jennifer_SEA and 41 others
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Dr.GutHealth
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Mar 2, 2026 at 5:12 PM#37

Adding the clinical framing, because it changes how the question reads. There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.

45 18tyler_CSCS, VanRx_Mike, steve_okc and 42 others
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claudia_zurich
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Mar 5, 2026 at 10:18 AM#38
Dr.GutHealth said:
There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.

Same pattern here, and in the same order.

46 19Dr.LipidDallas, alex_tucson, kevin_tulsa and 43 others
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Dr.AddMedPHL
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Mar 8, 2026 at 3:23 AM#39
Dr.GutHealth said:
There is a difference between no evidence and evidence of no effect, and this subject is one where the two get swapped freely in both directions.

There is a second half to this that has not been said yet. The mechanism and the magnitude are separate questions. Agreeing that something happens says nothing about whether it happens enough to act on.

Correct me if the detail matters more than I have assumed.

Last edited: Mar 8, 2026 at 5:23 AM
47 20TomFromTexas, mike.trainer_LA, sarah_nash92 and 44 others
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BiostatsBrad
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Mar 10, 2026 at 8:26 PM#40

One concrete data point for the thread. Give anything pharmacological four weeks before you judge it, and give anything measured weekly a four-point rolling average before you call it a trend.

Last edited: Mar 10, 2026 at 9:26 PM
19 17NicoleRaleigh, james_edin, FranDenver and 16 others
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