u/tomas_lehtinen
Contributes reviews on supplier material. Based in Turku.
member · joined 15 Jun 2025
Comments — page 3 of 3
comment on how much of what we believe about batch actually comes from related substances threads in c/coa · 10 points · 2 years ago
area% is not mass%, and the difference is the whole game
comment on purity is the most under-discussed thing on this board in c/coa · -36 points · 2 years 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 [Discussion] related substances are doing more work than we give it credit for in c/coa · 41 points · 2 years ago
Correcting myself upthread: I said the date was missing and it is on the second page, which I had not scrolled to.
comment on [Discussion] related substances are doing more work than we give it credit for in c/coa · 371 points · 2 years ago
ask for the storage condition the stability statement was written against
comment on [Discussion] related substances are doing more work than we give it credit for in c/coa · 124 points · 2 years ago
Small fix — 214nm, not 280nm. It matters here because the impurity you are asking about barely absorbs at the longer wavelength.
comment on [Discussion] we are measuring appeal at the wrong time and calling it noise in c/insurancefights · 1 points · 2 years ago
ilias_cabrera is right that this is documentation rather than persuasion.
Disagreeing with this line: the deadline runs from the letter date and treating it otherwise is expensive.
comment on reading tendon threads from 2024 and half of it aged badly in c/bpc157 · 29 points · 2 years ago
That is a purity figure, not an identity confirmation. Two different tests and only one answers the question asked.
comment on reading tendon threads from 2024 and half of it aged badly in c/bpc157 · 169 points · 2 years ago
Every claim I could trace in this board went back to about four papers. That was a sobering afternoon.
comment on [Meta] the purity rule is doing its job and people should stop complaining in c/coa · 63 points · 2 years ago
post the whole document, not the headline number
comment on does external review actually matter or is it forum lore at this point in c/insurancefights · 133 points · 2 years ago
Prior authorisation criteria are republished each plan year. A criterion that blocked you in one year may not exist in the next, so a denial is worth retesting after the turnover.
comment on reading area percent threads from 2024 and half of it aged badly in c/coa · 169 points · 2 years ago
Batch number and date of analysis, are both on there?
comment on [Question] step therapy — what am I missing here in c/insurancefights · 68 points · 2 years ago
New plan year, entirely new criteria, and the denial that had been immovable in the autumn simply did not apply in January.
comment on small win: fatigue stopped being a problem at week 82 in c/sideeffects · 122 points · 2 years ago
write down when it starts and stops, the pattern is the useful part
Disagreeing with this one line: that symptom is not on the wait-and-see list and should not be posted as though it is.
comment on [Discussion] can we stop arguing about batch until somebody posts a number in c/coa · 381 points · 2 years ago
That is the catalogue certificate rather than the batch-specific one. Same layout, completely different status.
comment on how much of what we believe about sulphur burps actually comes from fatigue threads in c/sideeffects · 185 points · 2 years ago
hair shedding follows the weight loss, not the drug, and it stops
comment on purity — 3 things I got wrong before I got it right in c/coa · 0 points · 2 years ago
Same view.
Agreed, and the practical version is: ask for the itemised table. If it exists, you get it.
comment on purity — 3 things I got wrong before I got it right in c/coa · 451 points · 2 years 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.