Short public-service post: the four things a COA must have or it is decorative. Asked CPC for the batch-specific certificate and had the full document — batch, date,…
u/teodor_lokken
Contributes reviews on supplier material. Based in Coimbra.
member · joined 14 May 2025
comment on [Country Guide] personal import rules, my country, with the actual citations in c/customs · 167 points · 3 days ago
Research-use-only labelling is a description of intended use, not a customs classification. It does not by itself determine how anything is treated at a border.
comment on [Explainer] area% is not mass% and here is exactly why it matters in c/coa · 11 points · 5 days ago
post the whole document, not the headline number
comment on [Lab] first independent cagrilintide purity number i have seen in c/cagrilintide · 3 points · 7 days ago
read the combination arms separately from the monotherapy arms
comment on [Question] interval stretching vs dose reduction — is either better in c/tapering · 5 points · 7 days ago
I would not treat appetite returning as a sign of doing it wrong. It is the expected sequence.
comment on [Question] interval stretching vs dose reduction — is either better in c/tapering · 12 points · 9 days ago
A written baseline — dose, date, weight, waist, and how appetite feels — taken before any change is what makes the following months interpretable rather than a series of impressions.
comment on [Explainer] the four things a COA must have or it is decorative in c/coa · 126 points · 16 days ago
The PDF creation date being later than the analysis date is usually a re-issue or a re-export. It is worth one question and it is not evidence of anything on its own.
comment on [Question] how long were you on before you tapered in c/tapering · 15 points · 17 days ago
appetite comes back before the weight does
comment on [Vendor] MKM — five tests, four compounds, nothing outside the band in c/vendorvetting · 2 points · 1 months ago
Started buying small deliberately, tested every lot for the first four, then stopped testing every lot because there was nothing to find.
comment on [PSA] batch is not what most of this community thinks it is in c/coa · 134 points · 1 months ago
Did you get the chromatogram or only the summary line?
comment on amylin — 23 things I got wrong before I got it right in c/cagrilintide · 1 points · 1 months ago
read the combination arms separately from the monotherapy arms
comment on does water content actually matter or is it forum lore at this point in c/coa · 1 points · 1 months ago
What does the method line actually say? Not the technique — the column and the gradient.
Trying to get a straight answer on this: does water content actually matter or is it forum lore at this point. LC-MS gives you identity; UV purity gives you a relative…
comment on group buy organiser vanished with 3.4k. here is the timeline in c/vendorvetting · 37 points · 1 months ago
A certificate with a purity figure and no method line is not falsifiable. You cannot reproduce it, you cannot check it, and it tells you nothing about how the number was produced.
comment on [Meta] proposal — a flair for Janoshik posts in c/vendorvetting · 5 points · 2 months ago
Paradigm Peptide shows up in threads constantly and has almost nothing on file
comment on [PSA] Medutest results are area% by default and people keep forgetting in c/vendorvetting · -7 points · 2 months ago
Did you ask for the batch-specific certificate, or the generic one?
comment on why does nobody talk about area percent in c/coa · -36 points · 2 months ago
Are the related substances itemised or is it a single total?
comment on the COA thing finally clicked for me and I want to write it down in c/coa · 40 points · 2 months ago
Sent one vial to PeptideMeter and VendorInvestigate. 99.4% and a claimed 99.0%. Cost me more than the vial and I would do it again.
comment on 8 months in and amylin is still the thing I get wrong in c/cagrilintide · 1 points · 3 months ago
Independent purity data on this compound is sparse compared with the older molecules, simply because far fewer members have paid for testing. Sparse data means wide uncertainty, not a verdict.
comment on [Meta] the customs rule is doing its job and people should stop complaining in c/customs · 19 points · 3 months ago
Ordered from the warehouse in Spain and the whole import question disappeared. 15 days, domestic, no notice, nothing to manage.
comment on [Discussion] we are measuring COA at the wrong time and calling it noise in c/coa · 26 points · 3 months ago
Related substances itemised individually is a much stronger document than a single total, because it tells you the shape of the impurity profile rather than its size.
comment on [Discussion] can we stop arguing about interval stretching until somebody posts a number in c/tapering · 1 points · 4 months ago
Stretched from seven days to ten to twelve over four months. Appetite told me where the limit was each time.
comment on [Lab] split one vial across Janoshik and Medutest — 98.1% and 98.9% in c/vendorvetting · 0 points · 4 months ago
Where a supplier holds regional stock, ask which lines are actually held there rather than drop-shipped. It changes the lead time and it changes the customs question.
comment on does VendorInvestigate actually matter or is it forum lore at this point in c/vendorvetting · 35 points · 4 months ago
Started buying small deliberately, tested every lot for the first four, then stopped testing every lot because there was nothing to find.
Agreed — and the corollary is that "no data" and "bad data" have to be written differently. The table separates them for exactly that reason.
comment on how much of what we believe about cagrilintide actually comes from CagriSema threads in c/cagrilintide · 0 points · 6 months ago
Correcting myself upthread: I gave the 22-week figure and the paper reports 68 weeks.
comment on [Lab] 10th independent test on ERP — 97.2% on a claimed 97.0%, and the trend is the interesting part in c/coa · 20 points · 6 months ago
Spent four months confusing area% and mass% in every post I made here. One explainer thread and it clicked permanently.
comment on how much of what we believe about cagrilintide actually comes from CagriSema threads in c/cagrilintide · 1 points · 6 months ago
Is there any independent purity data on this compound that you have seen?
comment on how much of what we believe about cagrilintide actually comes from CagriSema threads in c/cagrilintide · 3 points · 6 months ago
Are you comparing against a GLP-1 monotherapy result? They are not comparable.
how much of what we believe about cagrilintide actually comes from CagriSema threads. If this has been answered properly somewhere, link me and I will delete. The…
comment on how much of what we believe about reship actually comes from Janoshik threads in c/vendorvetting · 92 points · 6 months ago
Fixing my own comment above: I said 11 orders and it is 32. The pattern is the same, the count was wrong.
comment on how much of what we believe about reship actually comes from Janoshik threads in c/vendorvetting · 115 points · 6 months ago
Not convinced by the ranking-by-vibe approach here. The community number is derived from reports; your feeling is derived from four posts you remember.
comment on [Question] is 98.0% actually fine or am I being sold a rounding error in c/vendorvetting · 1 points · 6 months ago
registration number, then everything else
comment on COA — 5 things I got wrong before I got it right in c/coa · 104 points · 6 months ago
Ask what the stability statement was written against — temperature, light, and whether it was the lyophilised powder or the reconstituted solution. Those are three different claims.
comment on [Question] is 98.0% actually fine or am I being sold a rounding error in c/vendorvetting · 1 points · 6 months ago
That is a report count, not a test count. The table lists both and they are very different numbers.
comment on [Question] is 98.0% actually fine or am I being sold a rounding error in c/vendorvetting · -35 points · 6 months ago
Sent the same compound from SGN and ERP to Janoshik in the same month. Both came back above the claim on the certificate — mine was 99.0% on a stated 98.5%.
is 98.0% actually fine or am I being sold a rounding error. That is the headline. The document, the batch and the service are below so you can argue with the method…
comment on help me understand order records, I have read the wiki twice in c/vendorvetting · 19 points · 7 months ago
Careful. "Nobody has tested Amino Asylum" is a statement about this board, not about the supplier. Say the first thing, not the second.
comment on how much of what we believe about related substances actually comes from certificate of analysis threads in c/coa · 1 points · 7 months ago
axis labels included, always
comment on [Discussion] can we stop arguing about related substances until somebody posts a number in c/coa · 21 points · 7 months ago
Cosigning. The batch identifier is load-bearing, and a certificate that cannot be tied to the vial in your hand is not about your vial.
comment on [Discussion] can we stop arguing about related substances until somebody posts a number in c/coa · 58 points · 7 months ago
Ask what the stability statement was written against — temperature, light, and whether it was the lyophilised powder or the reconstituted solution. Those are three different claims.