🍪 The GLP Lounge uses cookies to improve your experience, analyze traffic, and personalize content. By continuing to use this site, you agree to our Cookie Policy.
Evidence-based GLP-1 & peptide discussion since 2023
ForumsCompounding & FormulationFDA warning letters to compounding pharmacies — November 2025 Page 8

FDA warning letters to compounding pharmacies — November 2025

gary_naperville Sun, Mar 15, 2026 at 7:46 PM 36 replies 1,552 viewsPage 8 of 8
LipidDoc_ATL
Senior Member
1,123
5,678
Apr 2024
Atlanta, GA
Apr 1, 2026 at 2:33 AM#36
lucas_SP_BR said:
If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

Agreed, and one caution: a single measurement is not a measurement. Anything that moves day to day needs a trend before it means anything at all.

Last edited: Apr 1, 2026 at 7:33 AM
30 5rachel_ABQ, traveltech_sara, AttorneyGrant and 27 others
Reply Quote Save Share Report
matt_MKE
Member
312
1,345
Sep 2024
Milwaukee, WI
Apr 1, 2026 at 5:50 PM#37
lucas_SP_BR said:
If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

Genuinely useful, thank you. I had the facts and not the framework. Printing the relevant bit and taking it with me.

Last edited: Apr 1, 2026 at 8:50 PM
29 4Dr.EndoEP, GraceAZ_72, carl_compliance and 26 others
Reply Quote Save Share Report
LibrarianMeg
Senior Member
1,678
7,890
Mar 2024
Baltimore, MD
Apr 2, 2026 at 9:08 AM#38

From the other side of the consultation, briefly. The version of this that has an answer is narrower than the version being asked. Narrow it and it becomes tractable; leave it broad and the thread will produce nine confident and incompatible replies.

28 3julia.endo, JessicaM_2024, TomFromTexas and 25 others
Reply Quote Save Share Report

Sigma-Aldrich — Research-Grade Standards

Certified reference materials, analytical reagents, and research-grade standards for peptide verification. Trusted by laboratories worldwide.

Shop Reference Standards
mark_tokyo
Member
456
1,890
Jun 2024
Tokyo, JP
Apr 3, 2026 at 12:26 AM#39
LibrarianMeg said:
The version of this that has an answer is narrower than the version being asked.

Second this. The detail I would add is minor and it is already implied above.

27 2HPLC_Greg, LibrarianMeg, bri_stats and 24 others
Reply Quote Save Share Report
DerekSJ_a1c
Member
378
1,678
Aug 2024
San Jose, CA
Apr 3, 2026 at 3:45 PM#40
LibrarianMeg said:
The version of this that has an answer is narrower than the version being asked.

Coming at LibrarianMeg’s question from a different direction. 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.

Happy to go further on any of that.

Last edited: Apr 3, 2026 at 8:45 PM
5 5AttorneyGrant, DebRD_ATL, KristenIndy and 2 others
Reply Quote Save Share Report
1678

Similar Threads

503A vs 503B compounding — regulatory framework explained4 replies
Compounded semaglutide stability: accelerated degradation study results6 replies
Lyophilized vs liquid peptides — stability and bioavailability comparison18 replies
Bacteriostatic water sourcing and sterility considerations8 replies
State-by-state compounding pharmacy regulations — 2026 map8 replies
ForumsNewTrendingMembersAccount

Log In

Forgot password?
No account? Register