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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingMass spectrometry for peptide identity verification — March 2026 Page 6

Mass spectrometry for peptide identity verification — March 2026

hannah_MT Sat, Jul 12, 2025 at 7:00 AM 26 replies 1,892 viewsPage 6 of 6
Dr.LipidDallas
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Jul 21, 2025 at 10:57 AM#26

From the other side of the consultation, briefly. 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.

30 3pam_stl, wei_SG, cory_ATX and 27 others
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kevin_tulsa
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Jun 2024
Tulsa, OK
Jul 21, 2025 at 11:18 PM#27
Dr.LipidDallas said:
The distinction that resolves most of these threads is between what is true on average and what is true for one person.

Mine went the same way, slower. The detail I would add is minor and it is already implied above.

31 4Dr.RheumBOS, greg_boulder, quinn_sf and 28 others
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Dr.SportsMedIN
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Indianapolis, IN
Jul 22, 2025 at 11:38 AM#28
Dr.LipidDallas said:
The distinction that resolves most of these threads is between what is true on average and what is true for one person.

Adding the part of the answer the thread has not reached. Start from the measurement rather than the conclusion. Almost every disagreement here turns out to be two people measuring different things and comparing the numbers anyway.

I would rather be corrected than agreed with, if it comes to it.

32 5adam_van, Dr.SurgeonPGH, rachel_ABQ and 29 others
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Dr.PathRoch
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Jun 2024
Rochester, MN
Jul 22, 2025 at 11:58 PM#29

One concrete data point for the thread. If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way. Most of the apparent contradictions in these threads dissolve at that step.

33 6SaraMom3, Dr.MetabolicMD, RetaRick_CA and 30 others
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hannah_MT
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Feb 2026
Bozeman, MT
Jul 23, 2025 at 12:18 PM#30

Reporting back.

Update: I got the sleep and the intake sorted before deciding it was the drug, and most of the flatness went with them. Not all of it, and I am watching the rest.

5 3SleepFixSam, PurityPaulOR, MaxMetOK and 2 others
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