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u/tomas_lehtinen

Contributes reviews on supplier material. Based in Turku.

member · joined 15 Jun 2025

21,167post karma
8,231comment karma
5submissions
95comments

Overview — page 5 of 5

comment on 14 months in and formulary is still the thing I get wrong in c/insurancefights · 13 points · 1 year ago

Rodent data is rodent data. Dose scaling is not linear and the models tell you what to investigate, not what to expect.

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comment on area percent — my 20-week log, condensed into one table in c/coa · 80 points · 1 year ago

Strongly agree. Mass% and area% are answering different questions on the same document.

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comment on area percent — my 20-week log, condensed into one table in c/coa · 197 points · 1 year ago

the related substances line is where the story is

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comment on help me understand appeal, I have read the wiki twice in c/insurancefights · 34 points · 1 year ago

step therapy documentation is the weapon, use it

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comment on [Discussion] we are measuring COA at the wrong time and calling it noise in c/coa · -36 points · 2 years ago

Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.

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comment on [Discussion] can we stop arguing about related substances until somebody posts a number in c/coa · 6 points · 2 years ago

Sent one vial to PeptideMeter and VendorInvestigate. 96.8% and 99.1%. Cost me more than the vial did and I would do it again.

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comment on [Discussion] can we stop arguing about related substances until somebody posts a number in c/coa · 39 points · 2 years ago

Water content was 3.8%, acetate was 6.2%, purity was 99%, but net peptide was only 90% of the label weight. Perfectly honest, just chemistry.

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comment on [Discussion] can we stop arguing about related substances until somebody posts a number in c/coa · -5 points · 2 years ago

purity and net content are two different numbers, same vial

Disagree on that part. 97.4% and 97.6% on the same vial is normal.

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comment on three years of pentadecapeptide threads, summarised so you do not have to read them in c/bpc157 · 2 points · 2 years ago

The injection-site soreness was genuinely awful for three weeks and then simply stopped. I know that is not useful information, but it is what happened.

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comment on three years of pentadecapeptide threads, summarised so you do not have to read them in c/bpc157 · 0 points · 2 years ago

handlers in the community are rare and cautious

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comment on tried purity for 3 weeks. here is what happened. in c/coa · 63 points · 2 years ago

area% is not mass%, and here is exactly why it matters

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comment on small win: step therapy stopped being a problem at week 35 in c/insurancefights · 133 points · 2 years ago

Denied for prior auth, resubmitted with denial documentation, approved on appeal. The criteria exist, you just have to meet them.

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comment on [Meta] the batch rule is doing its job and people should stop complaining in c/coa · 239 points · 2 years ago

redact your own name, not the vendor's batch details

Adding to this: water content is doing more work than the comment implies.

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comment on [Meta] the batch rule is doing its job and people should stop complaining in c/coa · 32 points · 2 years ago

This is the correct framing. The COA structure matters as much as the number.

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comment on anyone else notice nausea kicking in around week 60 in c/sideeffects · 561 points · 2 years ago

This is the "correlation is mechanism" thing again. You changed three variables at once.

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comment on what changed for me between week 40 and week 89 in c/coa · 1 points · 2 years ago

Water content on the document? That affects your concentration math.

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comment on switched from 0.25mg to 1.7mg and the nausea got better, not worse in c/coa · 451 points · 2 years ago

post the whole document, not the headline number

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comment on [Meta] proposal — a flair for COA posts in c/coa · 138 points · 2 years ago

axis labels included, always

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Several 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.