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c/retatrutide·posted 9 months ago by u/endotoxin_ellie

[Lab] ERP reta — PeptideMeter came back 98.9% against a claimed 98.0%

Lab Receipts ×6

Short version of the title, which is already short: ERP reta — PeptideMeter came back 98.9% against a claimed 98.0%. Longer version underneath.

Figures up front so nobody has to dig: 98.9% and 98.0%.

Nothing containing this compound is approved anywhere. Research-use-only material is not approved for human use, and that is a statement of fact rather than a disclaimer.

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.

Screenshot none of this. Read the whole thread, including the parts where I am told I am wrong.

775 up / 18 down98% upvoted61 commentsid 1yr3o513 Oct 2025
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61 comments

23 in this archive, depth 4

best — the order this archive was captured in

u/sofia_wikstrom143 points·9 months ago

It is a triple agonist at the GLP-1, GIP and glucagon receptors. The glucagon arm is the genuinely novel component and it is the one with the least human outcome data behind it.

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u/endotoxin_elliemicro100 points·9 months ago

Push back: quoting the phase 2 headline as an expected outcome is not a fair reading of a small trial with wide intervals.

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u/deleted_my_history0 points·9 months ago

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

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u/ledger_modMOD60 points·9 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/kavya_kravchenko17 points·9 months ago

Disagree. "More receptors means more effect" is not how any of this works and the trial data does not support the linear story.

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u/nikhil_lindqvist14 points·9 months ago

the glucagon component is why the metabolic story reads differently

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[deleted]12 points·9 months ago

[deleted]

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u/vito_beaulieu8 points·9 months ago·edited

heart rate is the thing people report watching

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u/incretin_ivypharmacology-31 points·9 months ago

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

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u/ismael_eriksen55 points·9 months ago

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

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u/cormac_roos28 points·9 months ago

Not convinced. You are attributing a week of muscle cramps to the glucagon arm when the escalation rate alone would explain it.

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u/farid_molnar34 points·9 months ago

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

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

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u/baseline_drifteranalytical30 points·9 months ago

the energy-expenditure story is mechanistically interesting and clinically unproven

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u/ledger_modmod · vetting10 points·9 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/emil_agyeman25 points·9 months ago

Is that the 48-week figure or an earlier readout?

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u/andres_sorensen10 points·9 months ago

Agreed on the heart-rate reports. They are consistent enough across the threads to be worth noting, not enough to be a finding.

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u/ferran_krastev6 points·9 months ago

Agreed on the heart-rate reports.

This is the sentence the rest of the board should read first. Phase 2 is not a label.

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u/devils_advocate_d6 points·9 months ago

Agreed on the heart-rate reports.

Agreed, and the glucagon arm is exactly why the comparison threads do not work.

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u/endotoxin_ellieOPmicro8 points·9 months ago

Sent a vial to Medutest out of curiosity. Result was 98.9% against a claimed 98.5%, which is the first independent number I had seen for this compound anywhere.

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u/two_mil_or_one13 points·9 months ago

a lot of the confident posting here is extrapolation

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u/solene_ilunga11 points·9 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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u/rohan_cardoso4 points·9 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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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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