Same batch number on two different vendors means one thing and it is not good.
long-standing contributor · vetting · joined 24 Oct 2023
comment on [Math] 10mg vial + 2mL bac water, i want 2.5mg, how many units in c/reconstitution · 5 points · 1 days ago
stopper coring on the 12th draw because you keep using the same entry point. rotate.
comment on PDF metadata says the file was created in a browser. is that normal? in c/coa · 106 points · 2 days ago
they do, and the post says so twice. the claim is that it is worth fifteen seconds of checking, not that a producer string convicts anyone.
comment on [Lab] GGPeps warehouse vial vs direct vial, same nominal batch, same day — 97.4 vs 98.6 in c/labresults · 141 points · 3 days ago
which is why i keep saying the batch number tells you what document to look for, not what is in the vial. it is an index key, not a guarantee.
comment on [Resolved] the QST batch dispute — vendor retested at their own cost, numbers matched, my error in c/scamalerts · 143 points · 3 days ago
i have written thousands of words about cold chain and i put a mixed vial in a coat. i am not going to pretend that is anything other than embarrassing.
comment on PDF metadata says the file was created in a browser. is that normal? in c/coa · 302 points · 3 days ago
This is the cheapest check available and it catches a genuinely surprising amount. The pattern I see most is not a forged report — it is a real report that has been through three hands and had a logo pasted over it.
Which is worth distinguishing, because "reseller re-exported a genuine document" and "somebody generated a document" are very different accusations and this community has to be careful about which one it is making.
comment on [Resolved] the QST batch dispute — vendor retested at their own cost, numbers matched, my error in c/scamalerts · 121 points · 3 days ago
there was no bad batch. that is the finding of the thread. their results cluster at 98.0–98.5 across four entries.
comment on [Explainer] why 1mL syringes cause overdoses and 0.3mL ones do not in c/reconstitution · 28 points · 3 days ago
10mg vial, 2mL water, concentration is 10/2 — write it on the vial afterwards
Full timeline, because the accusation was mine and it was loud. June: my sema 10mg tested well under the COA. I posted it as a below-spec result and named the vendor.…
comment on how many independent tests before you trust a vendor. my number is three. in c/vendorvetting · 141 points · 5 days ago
they do not, because members buy retail and do not announce it. and if they did, we would see systematically better results on tested batches than on the vendor COAs, and we see the opposite about as often.
comment on how many independent tests before you trust a vendor. my number is three in c/vendorvetting · 14 points · 9 days ago
This order history matches mine almost exactly. Same vendor, same timeframe, same result.
comment on [PSA] a vendor-supplied COA is a marketing document until someone else agrees with it in c/vendorvetting · 21 points · 10 days ago
Removed a chain here. The rule is one line long and it is not negotiable.
comment on [Vendor] BCH sent the wrong compound and fixed it in 48 hours in c/vendorvetting · 1 points · 12 days ago
Not convinced. The evidence does not support that reading.
comment on small win: pentadecapeptide stopped being a problem at week 15 in c/bpc157 · 23 points · 21 days ago
the tendon literature looks promising but rodent-only
comment on what changed for me between week 15 and week 64 in c/researchpeptides · 11 points · 24 days ago
purity and identity are two questions
comment on [Vendor] TFC shipping got noticeably slower after March, anyone else in c/vendorvetting · 98 points · 27 days ago
Respectfully this is a sample of one presented as a finding.
comment on [Resolved] the QST batch dispute — vendor retested, numbers matched, my error in c/vendorvetting · 24 points · 29 days ago
Tracking number removed. It identifies both ends of a shipment.
comment on the reconstitution question that gets asked weekly, answered properly in c/reconstitution · 26 points · 1 months ago
No. This is the kind of confident post that gets copied into a screenshot and repeated for years. Where is the evidence.
comment on 2 months in and mg/mL is still the thing I get wrong in c/reconstitution · 74 points · 1 months ago
show your working or it is unhelpful
comment on [PSA] non-peptide is not what most of this community thinks it is in c/orforglipron · 3 points · 2 months ago
small molecule, not a peptide, purity discussion is different
comment on [Question] rodent data — what am I missing here in c/bpc157 · 23 points · 2 months ago
Certified reference materials for peptide identity and purity work.
sigmaaldrich.comSeveral compounds discussed on GLP Research Hub are sold for research use only and are not approved for human use anywhere. Nothing here is medical advice and none of it is written by your clinician. If a post reads like an instruction, treat it as a description of what one stranger did.
Reference