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c/retatrutide·posted 5 months ago by u/ferran_krastev

[Lab] WXT reta — PeptideMeter came back 97.1% against a claimed 97.0%

Lab Receipts ×3 Cold Box ×1 Well Actually ×1

Short version of the title, which is already short: WXT reta — PeptideMeter came back 97.1% against a claimed 97.0%. Longer version underneath.

Figures up front so nobody has to dig: 97.1% and 97.0%.

The standing caveat, written out properly because it keeps getting compressed into a footnote.

Nothing containing this compound is approved by any regulator. Research-use-only material is not approved for human use. That is not a legal formality on this board — it is why there is so little independent data, why the escalation schedules people post are invented, and why nobody here can answer a dosing question.

What this board can usefully do is read the published trials carefully, log independent purity results, and be honest about how thin the evidence base is. Everything else belongs somewhere with a clinician in it.

What the glucagon arm is doing, as best anyone can say from public data.

GLP-1 and GIP agonism cover appetite and insulin secretion in ways that are now reasonably well characterised. Glucagon receptor agonism is the third leg and it is associated with increased energy expenditure and with effects on hepatic fat.

Mechanistically that is why this compound reads as a different proposition rather than a stronger version of a dual agonist. Clinically, the size and durability of that difference in humans is precisely what is not yet established, and anyone telling you otherwise is filling a gap with confidence.

Happy to answer the boring questions. Those are usually the ones worth asking.

19,780 up / 14,390 down58% upvoted60 commentsid w6yku72 Feb 2026
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30 in this archive, depth 5

best — the order this archive was captured in

u/trialwatch_theotrial nerd323 points·5 months ago

Where the evidence actually stands, since every thread here assumes a different answer.

Phase 2 reported a large mean body weight change at 48 weeks across a few hundred participants with a slow, protocol-driven escalation. The effect size was striking. The confidence intervals were wide, the population was small, and the duration was under a year.

Phase 3 is running. Until it reports, everything else — including the ranking arguments this board loves — is extrapolation from a small study. That is not a criticism of the compound; it is a description of the evidence.

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u/ledger_modmod · vetting269 points·5 months ago

triple agonist — GLP-1, GIP and glucagon, and the glucagon arm is the new part

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u/trialwatch_theotrial nerd80 points·5 months ago

the energy-expenditure story is mechanistically interesting and clinically unproven

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u/ferran_krastevOP144 points·5 months ago

Sent a vial to Medutest out of curiosity. Result was 98.0% against a claimed 97.5%, which is the first independent number I had seen for this compound anywhere.

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u/incretin_ivypharmacology304 points·5 months ago

heart rate is the thing people report watching

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u/ferran_krastevOP438 points·5 months ago

heart rate is the thing people report watching

Disagree with this specific inference. A 48-week readout does not tell you the shape of the curve after it.

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[removed]310 points·5 months ago

[removed by moderator]

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u/lina_bruun216 points·5 months ago

What is the source for that figure — the published paper or a summary of it?

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u/zeynep_mbeki258 points·5 months ago

Kept a log specifically because there is so little published. It is one person and it is not data.

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u/titration_marshalmod · c/semaglutide0 points·5 months ago

Sceptical of the extrapolation. Forty-eight weeks does not tell you about seventy-two, and the curve shape is exactly what is unknown.

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u/sofia_wikstrom1 point·5 months ago

Sceptical of the extrapolation.

titration_marshal is right about the escalation being the variable. It explains most of the difficult reports here.

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u/nordic_pricing1 point·5 months ago

How fast was the escalation? That is usually the variable that explains the reports.

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u/marit_laurent1 point·5 months ago

Phase 2 estimates effect and finds a dose range. Phase 3 estimates it precisely in a bigger population and catches what phase 2 was too small to see. Treating them as the same tier of evidence is the recurring error here.

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u/ewan_zielinski1 point·5 months ago

Phase 2 estimates effect and finds a dose range.

Adding the standing caveat: none of this is approved anywhere and research material is not for human use.

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u/nabila_bakken209 points·5 months ago

That reads as a titration plan for an unapproved compound. This board cannot host that and it should not want to.

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u/devils_advocate_d111 points·5 months ago

Careful with the rankings. A phase 2 result and a phase 3 result are not on the same evidential footing and cannot be listed in one table.

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u/quiet_moderatormod28 points·5 months ago

the TRIUMPH programme is still running, so anything definitive is premature

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u/ewan_marchand35 points·5 months ago

the escalation is where most of the reported trouble sits

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u/incretin_ivyMOD148 points·5 months ago

Removed the escalation schedule. There is no published protocol for members to follow and inventing one here is exactly what this board does not do.

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u/rohan_cardoso102 points·5 months ago

Correction: TRIUMPH is the phase 3 programme. The number you are quoting is from the phase 2 readout, which is a different trial.

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u/lina_bruun25 points·5 months ago

not approved anywhere, which is the single most important fact in this board

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u/farid_molnar95 points·5 months ago·edited

Glucagon receptor agonism is associated with increased energy expenditure and with hepatic effects. That is a mechanistic story with strong preclinical support and limited phase 2 human data.

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u/tired_ledger_notes78 points·5 months ago

The phase 2 readout ran to 48 weeks in a few hundred participants with a slow escalation. Both the size and the duration matter when people quote the headline number.

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u/reta_and_regret69 points·5 months ago

the glucagon component is why the metabolic story reads differently

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u/deleted_my_history56 points·5 months ago

dose escalation in the trials was slow for a reason

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u/freya_baptista17 points·5 months ago

a lot of the confident posting here is extrapolation

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u/yara_lindholm86 points·5 months ago

nothing here is available as a prescription product, so read every thread with that in mind

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u/halima_mbeki101 points·5 months ago

Watched heart rate on a wearable across twelve weeks because the threads said to. It moved a little and I have no idea whether that means anything.

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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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