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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingIs 98% purity actually good or should I be worried — need advice Page 2

Is 98% purity actually good or should I be worried — need advice

kim_atl_prep Wed, Jan 21, 2026 at 2:58 PM 13 replies 1,095 viewsPage 2 of 3
tampaLisa73
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Jan 21, 2026 at 5:48 PM#6

Congrats kim_atl_prep!! You should be so proud of yourself. 🎉

19 8RunnerRach, TrialNerd_Beth, HPLC_Greg and 16 others
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julia.endo
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Jan 21, 2026 at 6:05 PM#7

Clinical perspective on Is 98% purity actually good or should I:

I have managed roughly 300 patients on GLP-1 therapy and this topic comes up frequently. What the data shows — and what I see in practice — is that the medication works best as part of a comprehensive approach.

For this specific question, I would recommend: getting comprehensive baseline labs first.

41 7mark_tokyo, hans_munich, jason_sac26 and 38 others
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DadBodDave
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Jan 21, 2026 at 6:22 PM#8

Following this thread closely. Is 98% purity actually is something I'm actively working through.

19 16pat_auckland, Dr.GastroMayo, JakeBK_lifts and 16 others
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Dr.RenalNash
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Jan 21, 2026 at 6:39 PM#9

Reading this thread on Is 98% purity actually hits close to home. Night shift nurse — I started at 283 lbs and felt like I would tried everything.

9 months on tirz and I am a different person. Not just the 58 lbs lost — my energy, my mood, my relationship with food. All transformed.

If you are on the fence about Is 98% purity — take the leap. It was the best health decision I have ever made. ❤️

Last edited: Jan 21, 2026 at 11:39 PM
32 5anders_CPH, Dr.NutriCornell, pam_stl and 29 others
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chris_chi24
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Jan 21, 2026 at 6:56 PM#10
tampaLisa73 said:
You should be so proud of yourself

This is exactly right. tampaLisa73 articulated what I have been trying to explain to my friends for months. The Is 98% purity actually aspect is what made the difference for me.

27 0SleepFixSam, PurityPaulOR, MaxMetOK and 24 others
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