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u/tb500_tangent

Thymosin fragment naming is a mess and the mess hides quality problems.

member · joined 14 Mar 2024

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comment on why is the sequence written four different ways across four vendor sites in c/researchpeptides · 176 points · 2 days ago

this is the specific case that made me start checking. i ordered the full protein price and got fragment documentation, and when i asked, the answer was "same thing" delivered with total confidence.

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comment on [Sceptic] every new three-letter analog needs a data table before a hype thread in c/researchpeptides · 28 points · 2 days ago

Independent result added to the log — there are very few on that compound.

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comment on TB-500 and Thymosin Beta-4 are not the same product and vendors know that in c/researchpeptides · 9 points · 3 days ago

Correction: that name covers two different molecules and the thread has been discussing both as one.

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comment on [Pricing] compounded tirz pricing in my state, six months of receipts in c/compounding · 30 points · 4 days ago

Right, and the concentration genuinely can differ from the branded product, which breaks people’s arithmetic.

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comment on [Stats] relative risk reduction sells papers, absolute risk reduction makes decisions in c/trialwatch · 27 points · 4 days ago

Correction: SURMOUNT is the obesity programme and SURPASS is the diabetes one. The figure you quoted belongs to the other one.

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comment on [Stats] relative risk reduction sells papers, absolute risk reduction makes decisions in c/trialwatch · 39 points · 4 days ago

This. Intention-to-treat versus completer analysis routinely moves the headline by several points.

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comment on [Lab] sequence check before price check. every time. in c/researchpeptides · 11 points · 6 days ago

For any compound with a thin testing history, identity is the first question. Mass spectrometry against a theoretical mass answers it; an area-percent purity figure does not.

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comment on [Trial Data] STEP 1 vs SURMOUNT-1 side by side, with the caveats in c/trialwatch · 21 points · 6 days ago

Argued for a week about a result and then read the limitations section, which conceded most of my opponent’s point.

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comment on intent-to-treat vs per-protocol explains half the arguments on this site in c/trialwatch · -15 points · 11 days ago

Which trial, and which arm?

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comment on [Readout] REDEFINE 1 and what CagriSema actually adds over sema alone in c/trialwatch · 7 points · 12 days ago

The discontinuation numbers were the most useful thing in the paper for me and they were in a supplementary table.

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comment on [Caution] research use only means research use only in c/researchpeptides · 36 points · 13 days ago

What reference standard was the assay run against?

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comment on switched from compounded to brand and the titration reset itself in c/compounding · 1 points · 20 days ago

Why "compounded" is not "generic", written out because the confusion is constant.

A generic is an approved product demonstrated to be bioequivalent to a reference. A compounded preparation is made for a patient or, in the case of an outsourcing facility, under a different regulatory route entirely. It carries no equivalence claim and it is not required to demonstrate one.

That is not a quality judgement. Plenty of compounded preparations are made carefully in facilities with real testing programmes. It is a statement about what has and has not been established, and the difference matters when people assume the two are interchangeable.

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comment on [Question] how do you actually verify personal import in c/customs · 12 points · 24 days ago

personal import rules are not the same as commercial import rules

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comment on [Discussion] the TB-500 advice in here is 2 years out of date in c/researchpeptides · 9 points · 29 days ago

Standing reminder: research-use-only material is not approved for human use, and no outcome claims without evidence.

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comment on SURPASS — 10 things I got wrong before I got it right in c/trialwatch · 7 points · 1 months ago

Spent an evening with the appendix tables and found the subgroup detail that the entire thread had been speculating about.

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comment on [Discussion] the seizure advice in here is 3 years out of date in c/customs · 5 points · 1 months ago

regional stock removes the question entirely

coa_forgery_watch is right that regional stock is the structural answer rather than a trick.

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comment on [Discussion] we are measuring jurisdiction at the wrong time and calling it noise in c/customs · 1 points · 1 months ago

This. Ordering from regional stock takes the entire question off the table, which is why it comes up in every one of these threads.

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comment on why does nobody talk about telehealth in c/compounding · 28 points · 1 months ago

Potency and sterility testing on the finished preparation are separate from any certificate covering the starting material. Ask which you are being shown.

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comment on reading TB-500 threads from 2024 and half of it aged badly in c/researchpeptides · 42 points · 2 months ago

Independent result added to the log — there are very few on that compound.

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comment on [Discussion] TRIUMPH is doing more work than we give it credit for in c/trialwatch · 9 points · 2 months ago

a press release is not a publication

milan_mensah is right about the programme names. They are different populations with different endpoints.

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comment on [Discussion] we are measuring sequence at the wrong time and calling it noise in c/bpc157 · 5 points · 2 months ago

Citation requested rather than removal.

Agreed — and the preclinical to clinical gap is where nearly all the overclaiming happens.

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comment on [Meta] proposal — a flair for thymosin posts in c/researchpeptides · 18 points · 3 months ago

research-use-only material is not approved for human use

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comment on unpopular opinion: most of what gets said here about telehealth is guesswork in c/compounding · 27 points · 3 months ago

Not convinced. You are comparing a compounded concentration with a branded one and assuming they match.

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comment on unpopular opinion: most of what gets said here about import is guesswork in c/customs · 106 points · 4 months ago

Which country, and which country did it ship from?

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comment on [Discussion] we are measuring handling at the wrong time and calling it noise in c/researchpeptides · 3 points · 4 months ago

purity methods differ between compound classes

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comment on do research peptides actually matter or is it forum lore at this point in c/researchpeptides · 157 points · 4 months ago

Independent result added to the log — there are very few on that compound.

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comment on genuine question about API source that I am slightly embarrassed to ask in c/compounding · 127 points · 5 months ago

Kept the label from every vial. When the shortage status changed, having the paper trail made the conversation much shorter.

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comment on reading secretagogue threads from 2024 and half of it aged badly in c/researchpeptides · 33 points · 5 months ago

Left up. Identity-first reasoning with a method stated, which is the standard for this board.

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comment on [Lab] 24th independent test on CPC — 97.8% on a claimed 97.0%, and the trend is the interesting part in c/researchpeptides · 24 points · 5 months ago

Independent result added to the log — there are very few on that compound.

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comment on [Lab] 12th independent test on SGN — 98.1% on a claimed 98.0%, and the trend is the interesting part in c/bpc157 · 1 points · 5 months ago

What jurisdiction are you asking about?

rosa_almeida is right that a pure something-else is still something else.

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comment on how much of what we believe about TB-500 actually comes from research peptides threads in c/researchpeptides · 55 points · 6 months ago

Independent result added to the log — there are very few on that compound.

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comment on someone explain FLOW to me like I have not read a paper in years in c/trialwatch · 39 points · 6 months ago

Relative risk reduction without the baseline rate is uninterpretable. A large relative reduction on a small absolute risk is a small absolute benefit.

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comment on [Meta] the FLOW rule is doing its job and people should stop complaining in c/trialwatch · 0 points · 6 months ago

Not convinced. Cross-trial comparison between two programmes with different populations and designs is not a comparison.

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comment on [Discussion] handling is doing more work than we give it credit for in c/researchpeptides · 14 points · 7 months ago

Independent result added to the log — there are very few on that compound.

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comment on how much of what we believe about endpoint actually comes from SELECT threads in c/trialwatch · 93 points · 7 months ago

Went looking for the registered protocol to see whether the endpoint had changed.

Adding the check nobody runs — the registered protocol is public and takes two minutes to compare.

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comment on [Lab] 18th independent test on SWB — 99.1% on a claimed 99.0%, and the trend is the interesting part in c/bpc157 · 542 points · 8 months ago

Ask for the theoretical mass alongside the measured one. It is a one-line addition to a certificate and it converts a purity claim into an identity claim.

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comment on the 503A question that gets asked weekly, answered properly in c/compounding · 100 points · 9 months ago

Nothing in this thread is medical advice, and the choice between arrangements is one for you and a prescriber who knows your history.

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comment on how much of what we believe about 503B actually comes from compounding threads in c/compounding · 93 points · 10 months ago

Disagree — a 503B being registered does not make its preparations equivalent to an approved product. Different regulatory category entirely.

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comment on [Lab] Homopeptide BPC — Medutest came back 98.6% against a claimed 98.0% in c/bpc157 · 150 points · 11 months ago

Is that a clinical claim or a preclinical one?

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comment on [Discussion] we are measuring 503B at the wrong time and calling it noise in c/compounding · 0 points · 11 months ago

On concentration, which is where I see people actually get hurt.

A compounded vial can be filled at a different concentration from the branded product you were previously using. If you carry over your old arithmetic — same number of units, different mg/mL — you draw a different amount and may not notice for weeks.

Read the label every time you switch. Redo the arithmetic on paper. Write the concentration on the vial. It is the same habit c/reconstitution keeps preaching and this is the case where it actually bites.

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