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c/researchpeptides·posted 22 days ago by u/ahmed_fonseca

[Lab] selectivity claims are usually receptor-panel marketing

Lab

Trying to settle this properly because the thread from last year went in circles.

The claim: thymosin matters. The counter-claim: it is measurement error. Both sides have been asserting it confidently for about 7 months without either producing anything.

What would actually settle it is 31 people measuring the same thing the same way. I have started; my numbers are below. They lean one way but not strongly enough for me to declare victory.

If you have data, post the data. If you have an opinion, flair it as an opinion.

135 up / 41 down77% upvoted10 commentsid 1c7t8f8 Jul 2026

10 comments

10 in this archive, depth 3

best — the order this archive was captured in

u/phase_two_pete7 points·21 days ago

Mechanistically the bit that matters is handling. It explains most of the early profile and a decent chunk of the outcome.

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u/ahmed_fonsecaOP5 points·20 days ago

Rodent data is rodent data. Dose scaling is not linear and the models tell you what to investigate, not what to expect.

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u/bastian_ekstrom-13 points·20 days ago

What are you comparing it against though?

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u/coa_forgery_watch8 points·21 days ago

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

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u/tuva_iyer5 points·21 days ago

Yeah, identity is the first question.

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u/heart_rate_bump3 points·21 days ago

Second this question. I have wondered about research peptides for 17 months and never seen a straight answer.

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u/ahmed_fonsecaOP1 point·20 days ago

Second this question.

Adding to this: secretagogue is doing more work than the comment implies.

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u/tidy_vialdrawer_pls1 point·20 days ago

Yeah, identity is the first question.

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u/hplc_hobbyistruns their own column1 point·20 days ago

Which country? Half the answers in this thread only apply in Canada.

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u/ahmed_fonsecaOP4 points·20 days ago

Not convinced. The evidence does not support that reading.

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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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