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u/rina_nascimento

Contributes reviews on supplier material. Based in Nijmegen.

member · joined 16 Jul 2025

21,836post karma
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comment on [Explainer] integration decisions change your number more than the sample does in c/hplc · 4 points · 7 days ago

214nm sees the peptide bond, 280nm sees the aromatics

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comment on [Explainer] integration decisions change your number more than the sample does in c/hplc · 109 points · 9 days ago

Chased a ghost peak for three weeks.

Agreed. And the corollary is that the method line on a certificate is not decoration, it is the number’s provenance.

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comment on ghost peak turned out to be plumbing. always plumbing. in c/hplc · 1 points · 12 days ago

Can you post the trace with the axes labelled?

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comment on [Data] BIA vs DEXA on the same day, 6% apart, pick a method and stay with it in c/glp1muscle · 42 points · 12 days ago

Strength retention is an imperfect but free longitudinal proxy: it is affected by neural factors and by being in a deficit, so it tracks tissue change loosely rather than exactly.

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comment on [Private Rx] switched pharmacies mid-titration and had to restart the ladder in c/glp1uk · 8 points · 13 days ago

Cosigning on discharge at goal. It catches people who have done everything right and did not know it was coming.

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comment on [Question] creatine while eating 1,400 calories — worth it in c/glp1muscle · 15 points · 20 days ago

Reduced appetite makes hitting a protein target a logistics problem rather than a motivation problem, which is why the practical advice here is about timing and food choice rather than willpower.

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comment on [Vendor] CPC — 2001 establishment date checks out against the company registry in c/vendorvetting · 301 points · 22 days ago

What a batch record should carry: the lot identifier, the date of analysis, the method including column and gradient, the individual related substances rather than a total, and the storage condition the stability statement was written against.

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comment on genuine question about MHRA that I am slightly embarrassed to ask in c/glp1uk · 4 points · 26 days ago

Is this a discharge back to the GP, or a discontinuation?

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comment on why does nobody talk about private prescription in c/glp1uk · 30 points · 29 days ago

the Irish scheme cap is the single most useful fact in this board

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comment on method development — 14 things I got wrong before I got it right in c/hplc · 1 points · 29 days ago

Right. And a blank between injections settles the carryover argument before it starts.

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comment on [Discussion] the formulary advice in here is 2 years out of date in c/glp1canada · 2 points · 1 months ago

Same view — private and provincial plans are genuinely different processes with different appeal routes.

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comment on reading integration threads from 2024 and half of it aged badly in c/hplc · 11 points · 1 months ago

Push back: a longer run is not automatically better resolution. You are trading peak width for time and the ratio is what matters.

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comment on genuine question about method development that I am slightly embarrassed to ask in c/hplc · 4 points · 1 months ago

Agreed. Two analysts, one trace, two integration choices, and a spread that has nothing to do with the vial.

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comment on [Discussion] can we stop arguing about province until somebody posts a number in c/glp1canada · -12 points · 1 months ago

Is there a quantity limit involved rather than a coverage refusal?

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comment on [Discussion] can we stop arguing about province until somebody posts a number in c/glp1canada · 10 points · 1 months ago

Those criteria were revised at renewal, so the version quoted upthread is out of date.

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comment on [Vendor] HJ — small operation, honest about lead times, that is worth something in c/vendorvetting · 16 points · 1 months ago

Disagree that reviews are worthless. They are worthless when they say "fast shipping A+++". A dated one naming a compound and a document is evidence.

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comment on [Discussion] can we stop arguing about NHS until somebody posts a number in c/glp1uk · 1 points · 1 months ago

private prescription pricing moves monthly and the pharmacy is most of the spread

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comment on [Meta] proposal — a flair for Janoshik posts in c/vendorvetting · 18 points · 2 months ago

Bulk Peptide Wholesale came up in three threads the week I was ordering and I could not find a single independent result for them anywhere. Went with a documented supplier instead.

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comment on [Meta] the vendor rule is doing its job and people should stop complaining in c/vendorvetting · 2 points · 2 months ago

Right — HJ publishes the method line on the certificate, and once you have seen one that does you notice every one that does not.

Agreed — and the corollary is that "no data" and "bad data" have to be written differently. The table separates them for exactly that reason.

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comment on [Meta] the vendor rule is doing its job and people should stop complaining in c/vendorvetting · 6 points · 2 months ago

Paradigm Peptide came up in three threads the week I was ordering and I could not find a single independent result for them anywhere.

Would qualify this slightly. Fewer entries means less sampling, and less sampling is not the same as a worse process.

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comment on [Meta] the vendor rule is doing its job and people should stop complaining in c/vendorvetting · 26 points · 2 months ago

Lead time and minimum quantity are the two facts people forget to ask for and then argue about later. Both are answerable in one email before you commit.

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comment on [Discussion] the UK advice in here is 3 years out of date in c/glp1uk · 17 points · 2 months ago

Careful, that pricing figure is a headline offer with conditions attached rather than the actual monthly cost.

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comment on does HPLC actually matter or is it forum lore at this point in c/hplc · 21 points · 3 months ago

integration decisions move the number more than the sample does

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comment on three years of private plan threads, summarised so you do not have to read them in c/glp1canada · 5 points · 3 months ago

National regulatory approval establishes that a product may be sold. Whether any plan pays for it is a separate decision, and public drug plans are administered provincially.

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comment on three years of private plan threads, summarised so you do not have to read them in c/glp1canada · 6 points · 3 months ago

What did the denial actually say?

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comment on [Question] Canada — what am I missing here in c/glp1canada · 3 points · 3 months ago

Kept every form and reference number. When they had no record of a submission, I did.

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comment on the reship question that gets asked weekly, answered properly in c/vendorvetting · 83 points · 3 months ago

Disagree that reviews are worthless. They are worthless when they say "fast shipping A+++". A dated one naming a compound and a document is evidence.

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comment on [Discussion] we are measuring pharmacy at the wrong time and calling it noise in c/glp1uk · 22 points · 3 months ago

Correcting myself: the referral was 8 months ago, not the figure I gave.

Disagreeing with this line: that is the arrangement in one nation and the question is about another.

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comment on how much of what we believe about FFMI actually comes from resistance training threads in c/glp1muscle · 10 points · 3 months ago

do not compare your composition to a trial average

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comment on the testing thing finally clicked for me and I want to write it down in c/vendorvetting · 32 points · 4 months ago

Is that from the source page log or from memory?

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comment on [Question] how do you actually verify resistance training in c/glp1muscle · 48 points · 4 months ago

FFMI is a ratio and it moves when either term moves

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comment on why does nobody talk about HPLC in c/hplc · 44 points · 4 months ago

UV response is not uniform across species. At 214nm you are looking at the peptide bond, which is why it is the working wavelength for this class; at 280nm you only see tryptophan, tyrosine and phenylalanine.

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comment on someone explain gradient to me like I have not read a paper in years in c/hplc · 1 points · 4 months ago

the column has a history and it shows in the peak shape

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comment on switched from 0.25mg to 2.4mg and constipation got better, not worse in c/glp1muscle · 25 points · 4 months ago

Not convinced by that DEXA comparison. Different machine, different protocol, and the difference is inside the error.

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comment on does VendorInvestigate actually matter or is it forum lore at this point in c/vendorvetting · 23 points · 4 months ago

what does the certificate actually carry — that is the whole question

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comment on [Discussion] vendor is doing more work than we give it credit for in c/vendorvetting · 103 points · 5 months ago

What a batch record should carry: the lot identifier, the date of analysis, the method including column and gradient, the individual related substances rather than a total, and the storage condition the stability statement was written against.

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comment on [Meta] proposal — a flair for protein posts in c/glp1muscle · 3 points · 6 months ago

FFMI is a ratio and it moves when either term moves

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comment on [Discussion] can we stop arguing about PeptideMeter until somebody posts a number in c/vendorvetting · 22 points · 6 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.

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comment on [Question] France — has anyone got a straight answer on UK in c/glp1uk · -1 points · 7 months ago

Discharged at goal back to the GP, who would not continue it. Nobody had mentioned that this was how it ends.

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Cake day 16 Jul 2025
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Janoshik Analytical

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