20 categories

Sourcing

Supplier documentation, independent verification, red flags, logistics, payments and the regulatory picture. Maintained as documentation, not as recommendations.

140 topics6,877 posts43 solved Moderators: dr_okonkwo, t.vasquez About this category

Vendor reports 26 Independent verification 26 Red flags 24 Logistics 24 Payments 18 Regulatory 22

140 topics

Topic	Participants	Replies	Views	Activity
Cold packs, phase-change material, and what survives ten days Sourcing › Logistics shipping temperature excursion cold chain customs Cold packs, phase-change material, and what survives ten days — setting out what I have, and where I think it stops being reliable. A logistics question, since the answers here are usually better than…	+132	138	65k	2y
Pharmaceutical compounding rules, summarised from primary sources Sourcing › Regulatory MHRA EMA research use only Closed Pharmaceutical compounding rules, summarised from primary sources — setting out what I have, and where I think it stops being reliable. Structured report rather than an opinion, following the format the…	+135	163	46k	17mo
One lot is one lot: when a report becomes a pattern — the long version Sourcing › Vendor reports third-party testing Janoshik Analytical certificate of analysis batch & lot numbers Closed One lot is one lot: when a report becomes a pattern — the long version — setting out what I have, and where I think it stops being reliable. Structured report rather than an opinion, following the format the…	+137	152	46k	16mo
Research-use-only labelling: what it means and what it does not — the long version Sourcing › Regulatory EMA research use only compounding Posting this under the heading it deserves: Research-use-only labelling: what it means and what it does not — the long version Everything below is what sits behind that. I would like to talk about…	+150	158	55k	14mo
[2026 update] Regional warehouse stock versus direct despatch Sourcing › Logistics packaging customs shipping cold chain Regional warehouse stock versus direct despatch Writing it up because I had to work it out twice and would rather nobody else did. A logistics question, since the answers here are usually better than anywhere…	+135	147	32k	2d
[2026 update] Interpreting a result that disagrees with the supplier's certificate Sourcing › Independent verification Medutest VendorInvestigate blind sampling third-party testing Solved On the subject in the title: Interpreting a result that disagrees with the supplier's certificate Working notes rather than a conclusion. Structured report rather than an opinion, following the format the…	+121	128	51k	17h
Consistent declarations and why they matter more than clever ones Sourcing › Logistics packaging temperature excursion shipping customs Consistent declarations and why they matter more than clever ones — setting out what I have, and where I think it stops being reliable. A logistics question, since the answers here are usually better than…	+146	164	2k	17mo
Interpreting a result that disagrees with the supplier's certificate Sourcing › Independent verification Janoshik Analytical Medutest PeptideMeter third-party testing Interpreting a result that disagrees with the supplier's certificate Writing it up because I had to work it out twice and would rather nobody else did. Structured report rather than an opinion, following the…	+129	153	7.3k	5mo
A supplier that answers analytical questions with restated claims Sourcing › Red flags documentation quality disputed moderation mislabelling Solved Wiki On the subject in the title: A supplier that answers analytical questions with restated claims Working notes rather than a conclusion. A logistics question, since the answers here are usually better than…	+107	118	45k	12mo
Why we hide unevidenced fraud accusations and log the hiding Sourcing › Red flags underdosing mislabelling disputed moderation Solved Why we hide unevidenced fraud accusations and log the hiding — that is the question, and I have not found it answered plainly anywhere I have looked. I would like to talk about documentation quality as a…	+97	106	63k	14mo
Revisiting: The report format the maintainers ask for, and why each field is there Sourcing › Vendor reports batch & lot numbers Janoshik Analytical documentation quality third-party testing Posting this under the heading it deserves: Revisiting: The report format the maintainers ask for, and why each field is there Everything below is what sits behind that. Structured report rather than an…	+100	108	57k	1d
Insurance and replacement policies, compared Sourcing › Logistics temperature excursion cold chain customs shipping Solved On the subject in the title: Insurance and replacement policies, compared Working notes rather than a conclusion. Structured report rather than an opinion, following the format the maintainers asked for.…	+115	122	17k	17h
How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ Sourcing › Independent verification blind sampling PeptideMeter Medutest third-party testing How Janoshik, Medutest, PeptideMeter and VendorInvestigate differ I have a specific reason for asking rather than idle curiosity, and the context is below. Structured report rather than an opinion, following…	+117	130	3.3k	14mo
Submitting a sample: the process end to end Sourcing › Independent verification blind sampling PeptideMeter VendorInvestigate third-party testing On the subject in the title: Submitting a sample: the process end to end Working notes rather than a conclusion. I would like to talk about documentation quality as a signal, separately from product quality.…	+99	114	29k	21h
A report I filed that turned out to be wrong, and the correction Sourcing › Vendor reports certificate of analysis disputed third-party testing A report I filed that turned out to be wrong, and the correction Writing it up because I had to work it out twice and would rather nobody else did. Structured report rather than an opinion, following the…	+124	132	12k	13mo
Identical chromatograms across two different lots Sourcing › Red flags mislabelling underdosing documentation quality Identical chromatograms across two different lots Writing it up because I had to work it out twice and would rather nobody else did. A logistics question, since the answers here are usually better than…	+80	87	58k	18mo
Research-use-only labelling: what it means and what it does not Sourcing › Regulatory compounding research use only EMA FDA Posting this under the heading it deserves: Research-use-only labelling: what it means and what it does not Everything below is what sits behind that. I would like to talk about documentation quality as a…	+100	110	37k	5mo
Payment method and the leverage it gives you, ranked Sourcing › Payments research use only payments documentation quality Solved Closed Posting this under the heading it deserves: Payment method and the leverage it gives you, ranked Everything below is what sits behind that. Structured report rather than an opinion, following the format the…	+71	76	56k	10mo
Documentation that appears only after payment Sourcing › Red flags documentation quality moderation mislabelling disputed Solved Documentation that appears only after payment Writing it up because I had to work it out twice and would rather nobody else did. I would like to talk about documentation quality as a signal, separately from…	+113	124	13k	7mo
Assessing a warm arrival: the decision process — one year on Sourcing › Logistics temperature excursion customs shipping cold chain Assessing a warm arrival: the decision process — one year on Writing it up because I had to work it out twice and would rather nobody else did. A logistics question, since the answers here are usually better…	+125	138	1.7k	2.2y
Revisiting: Why a compound being unapproved is not the same as being illegal to possess Sourcing › Regulatory FDA EMA compounding research use only Closed On the subject in the title: Revisiting: Why a compound being unapproved is not the same as being illegal to possess Working notes rather than a conclusion. Structured report rather than an opinion, following…	+76	82	52k	11mo
A certificate whose chromatogram axes do not match its stated method — one year on Sourcing › Red flags mislabelling moderation documentation quality Solved A certificate whose chromatogram axes do not match its stated method — one year on Writing it up because I had to work it out twice and would rather nobody else did. Structured report rather than an opinion,…	+103	111	8.1k	2mo
Blind submission and why it changes minds — the long version Sourcing › Independent verification Medutest third-party testing Janoshik Analytical Posting this under the heading it deserves: Blind submission and why it changes minds — the long version Everything below is what sits behind that. Structured report rather than an opinion, following the…	+98	113	18k	2mo
Second pass at: What "verified" means on our vendor pages, stated narrowly Sourcing › Vendor reports Janoshik Analytical documentation quality third-party testing batch & lot numbers Solved Second pass at: What "verified" means on our vendor pages, stated narrowly — setting out what I have, and where I think it stops being reliable. A logistics question, since the answers here are usually better…	+94	102	20k	3mo
Follow-up: Documentation that appears only after payment Sourcing › Red flags disputed mislabelling underdosing documentation quality Wiki Posting this under the heading it deserves: Documentation that appears only after payment Everything below is what sits behind that. I would like to talk about documentation quality as a signal, separately…	+82	87	50k	14mo
How the vendor documentation pages are maintained, and by whom — what changed since Sourcing › Vendor reports third-party testing disputed batch & lot numbers Solved Asking directly, because I could not find a straight answer: How the vendor documentation pages are maintained, and by whom — what changed since A logistics question, since the answers here are usually better…	+98	104	3k	8mo
Splitting a vial for two laboratories: how to do it without ruining both — what changed since Sourcing › Independent verification VendorInvestigate third-party testing Medutest blind sampling Closed Posting this under the heading it deserves: Splitting a vial for two laboratories: how to do it without ruining both — what changed since Everything below is what sits behind that. A logistics question, since…	+107	115	5.2k	22mo
[2026 update] What a purity-only report leaves out Sourcing › Independent verification PeptideMeter third-party testing Janoshik Analytical The question in the title: What a purity-only report leaves out I will give what I have already checked below so nobody repeats it. Structured report rather than an opinion, following the format the…	+97	103	5.2k	3mo
A supplier who responds to a discrepancy with silence — what changed since Sourcing › Red flags mislabelling disputed documentation quality underdosing Wiki A supplier who responds to a discrepancy with silence — what changed since — setting out what I have, and where I think it stops being reliable. A logistics question, since the answers here are usually better…	+83	88	21k	6h
What a purity-only report leaves out Sourcing › Independent verification Medutest VendorInvestigate third-party testing PeptideMeter Solved What a purity-only report leaves out — that is the question, and I have not found it answered plainly anywhere I have looked. Structured report rather than an opinion, following the format the maintainers…	+92	105	4k	8mo

Sponsored Janoshik Analytical — independent third-party testingHPLC purity and mass-spectrometric identity on submitted samples, reported with the method stated. The laboratory most often cited in this community’s verification records.Independent testing → Sponsored GL Biochem (Shanghai) Ltd. — synthesis, directFounded 1998. ISO 9001 and cGMP certified, over 1,500 staff and 200-plus patents. Custom peptide synthesis and amino acid derivatives, with a batch certificate on every order.Custom synthesis →