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c/retatrutide·posted 11 days ago by u/burned_once_twice

[Question] why is reta purity testing so much more variable between labs

Question Well Actually ×3

Been lurking in c/progresspics for about 7 months and finally have something worth posting.

Short version: week 28, 15mg, and TRIUMPH is the bit I still cannot get a straight answer on. I have read the wiki, I have read the last 31 threads, and the answers split roughly down the middle.

What I actually want to know is whether the people saying it does not matter have measured it, or whether it is just repeated confidently. Happy to be told I am overthinking this — I probably am — but I would rather overthink it now than at week 22.

355 up / 129 down73% upvoted29 commentsid 1xx1pk18 Jul 2026

29 comments

20 in this archive, depth 4

best — the order this archive was captured in

u/dead_space_doug56 points·11 days ago

The evidence standard in c/vendorvetting gets called too strict about once a month, and every time, the thread ends with the complainant agreeing.

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u/renzo_yildiz-28 points·11 days ago

Yeah, phase 2 retatrutide is interesting but it is not comparable to phase 3 compounds.

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u/yannick_salinas19 points·11 days ago

Dose escalation on retatrutide is steeper and faster than on semaglutide. Do not assume the titration patterns transfer.

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u/niels_lindqvist27 points·10 days ago

This is correct. Triple agonism is genuinely different.

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u/lane_watchermod · logistics33 points·10 days ago

This is correct. Triple agonism is genuinely different.

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u/reta_and_regretMOD18 points·10 days ago

This is an urgent-care question wearing a forum question's clothes. Please contact a clinician rather than waiting for replies.

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u/andres_sorensen9 points·10 days ago

the weight curves are unusually steep, which makes predicting individual response harder

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u/cormac_roos6 points·10 days ago

What was the dosing schedule in that arm?

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u/elodie_grimaldi4 points·9 days ago

retatrutide is not approved anywhere for human use, posts must not read as instructions

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u/sofia_wikstrom26 points·10 days ago

What was the dosing schedule in that arm?

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u/nadia_trevino8 points·10 days ago

the dosing is steep, the sulphur burps reports are real, and nobody knows the human safety yet

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u/blunt_coldbox_20248 points·10 days ago

TRIUMPH data is phase 2, not phase 3, smaller n and shorter

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u/emil_agyeman6 points·9 days ago

TRIUMPH data is phase 2, not phase 3, smaller n and shorter

Yes, exactly this, and it is the bit that took me 20 weeks to accept.

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u/iman_castellanos24 points·10 days ago

I am going to push back on this slightly.

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u/matias_falk12 points·10 days ago

the glucagon component changes the side effect profile, not just the efficacy

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u/burned_once_twiceOP14 points·10 days ago

This is correct. Triple agonism is genuinely different.

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u/burned_once_twice7 points·10 days ago

heart rate and dose escalation need actual measurements, not impressions

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u/burned_once_twiceOP0 points·10 days ago

Disagree but this is the good kind of wrong — it is specific enough to be checked.

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u/burned_once_twiceOP0 points·10 days ago

TRIUMPH phase 2 showed 99.3% weight loss but the injection-site soreness profile on the highest arm was rough. Phase 2 != phase 3.

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[removed]10 points·10 days ago

[removed by moderator]

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About c/retatrutide

Retatrutide: GIP/GLP-1/glucagon triple agonism, the TRIUMPH programme, and the fact that most people discussing it are handling research-grade material with no human-use approval anywhere. Dose-response, heart-rate signal, and the unusually steep phase-2 weight curves get argued about here weekly.

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