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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingInter-lab variability in peptide testing — July 2024 Page 3

Inter-lab variability in peptide testing — July 2024

PedsEndoPhilly Fri, Jan 31, 2025 at 9:32 PM 52 replies 2,419 viewsPage 3 of 11
AussieAnna
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Sydney, AU
Feb 1, 2025 at 1:47 AM#11
Dr.AddMedPHL said:
Inter-lab variability in peptide is not that straightforward in my experience

This is exactly right. Dr.AddMedPHL articulated what I have been trying to explain to my doctor for months. The Inter-lab variability in aspect is the most important factor.

Last edited: Feb 1, 2025 at 2:47 AM
38 9TrialNerd_Beth, HPLC_Greg, LibrarianMeg and 35 others
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MASHdoc_SA
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Aug 2024
San Antonio, TX
Feb 1, 2025 at 2:04 AM#12

Reading this thread on Inter-lab variability in hits close to home. Night shift nurse — I started at 287 lbs and felt like I would tried everything.

13 months on tirz and I am a different person. Not just the 62 lbs lost — my energy, my mood, my relationship with food. All transformed.

If you are on the fence about Inter-lab variabilit — take the leap. It was the best health decision I have ever made. ❤️

Last edited: Feb 1, 2025 at 5:04 AM
45 10TrialTracker_MD, JennaRN, LabKate and 42 others
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greg_boulder
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Jul 2024
Boulder, CO
Feb 1, 2025 at 2:21 AM#13

sarah_TO — that is really helpful context on Inter-lab variability in. Follow-up question: what labs did your doctor order to monitor this?

I am in a similar situation (just started) and trying to set realistic expectations.

25 14Dr.DermMIA, fiona_VT, denise_HTX and 22 others
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Dr.PainCLE
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Mar 2024
Cleveland, OH
Feb 1, 2025 at 2:38 AM#14

To answer MASHdoc_SA's question specifically:

From a clinical standpoint, Inter-lab variability in is an area where we have good evidence.

The short answer: baseline labs + quarterly monitoring is the standard of care.

The longer answer involves understanding the mechanism of action at the receptor level, which I am happy to elaborate on if helpful.

15 7bbq_ray_KC, oliver_london, tane_welly and 12 others
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anders_CPH
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Feb 2024
Copenhagen, DK
Feb 1, 2025 at 2:55 AM#15

Bookmarked 📌 The Inter-lab variabilit info in this thread is essential. Coming back to this for sure.

7 9ChrisMacros, KetoKyle, CanadaChris and 4 others
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