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[Discussion] can we stop arguing about research peptides until somebody posts a number

Discussion The Quiet One ×2 Long Haul ×1

Long-ish post, sorry. tl;dr at the bottom.

I have been tracking research peptides against eGFR for 37 weeks because I could not find anyone who had. The correlation is weaker than I expected, which is itself mildly interesting given how confidently people link the two in here.

Caveats up front: one person, one lab, one assay, no control, and I changed my training in the middle of it, which was stupid.

tl;dr: probably real, definitely smaller than the threads imply, and not worth reorganising your week around.

1,168 up / 59 down95% upvoted49 commentsid ric5jc11 May 2026

49 comments

30 in this archive, depth 5

best — the order this archive was captured in

u/sequence_checkerMOD99 points·2 months ago

Tracking number removed. It identifies both ends of a shipment.

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u/yannick_barros67 points·2 months ago

thymosin fragments, GH secretagogues, TB-500, long tail

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u/reverse_image_ron55 points·2 months ago

evidence-level statements required: in vitro, rodent, or human

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u/cold_chromatogram_onlyOP-12 points·2 months ago

everything else in the vial drawer, identity

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u/idris_iyer1 point·2 months ago

research use only, handling and analysis, not administration

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u/prior_auth_painappeals31 points·2 months ago

Yeah, identity is the first question.

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u/cold_chromatogram_onlyOP39 points·2 months ago

evidence-level statements required: in vitro, rodent, or human

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u/cold_chromatogram_onlyOP43 points·2 months ago

focus on identity verification, handling, evidence state

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u/viktor_erdogan0 points·2 months ago

the thymosin literature is thin on humans

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u/second_week_sceptic69 points·2 months ago

I love that this community will spend 40 comments on a detail. That pedantry is why the numbers here matter.

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u/laila_almeida34 points·2 months ago

evidence-level statements required: in vitro, rodent, or human

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u/sofia_petrescu36 points·2 months ago

This is correct. Name it precisely.

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u/canada_coverage19 points·2 months ago

Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.

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[removed]14 points·2 months ago

[removed by moderator]

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u/marit_laurent16 points·2 months ago

purity and identity are two questions

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u/nayeli_iyer13 points·2 months ago

research use only, handling and analysis, not administration

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u/vendorinvestigate_vic7 points·2 months ago

Has anyone actually got this in writing, or is it forum lore at this point?

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u/marit_laurent25 points·2 months ago

Sweden here. Waited 7 months on a list, gave up, went private, and the total cost was roughly what I expected.

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u/runa_grimaldi13 points·2 months ago

not approved for human use, full stop

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u/boots_or_bust19 points·2 months ago

Maintenance for 11 months now. Weight moves within about 3kg and the dose is a quarter of what it peaked at.

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u/refund_ledger15 points·2 months ago

That is net peptide content, not purity. Different number, different meaning.

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u/old_account_202315 points·2 months ago·edited

regulatory status varies by country, check yours

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u/long_post_larry9 points·2 months ago

name the compound precisely, TB-500 and Thymosin Beta-4 are not the same

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u/rekha_mbeki11 points·2 months ago

everything else in the vial drawer, identity

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u/bence_ibarra5 points·2 months ago

regulatory status varies by country, check yours

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u/tb500_tangent11 points·2 months ago
appreciate you saying you do not know
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u/cold_chromatogram_only4 points·2 months ago

The confident tone is doing a lot of work that the evidence is not.

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u/soren_osei0 points·2 months ago

not approved for human use, full stop

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u/marit_mensa0 points·2 months ago

Yeah, identity is the first question.

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u/bastian_aalto1 point·2 months ago

Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.

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The wider research-peptide catalogue: thymosin fragments, GH secretagogues, melanocortin agonists, and the long tail of three-letter analogs. Focus on identity verification, handling and the state of the evidence — not on protocols, because these are not approved for human use.

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