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u/samir_falk

Contributes reviews on supplier material. Based in Medellín.

member · joined 11 Feb 2025

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Comments — page 2 of 3

comment on three years of 15mg threads, summarised so you do not have to read them in c/tirzepatide · 385 points · 8 months ago

It is a dual GIP and GLP-1 receptor agonist, and the GIP arm is the part that has no equivalent in the semaglutide threads. That is why the side-effect profile reads differently rather than just milder.

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comment on the formulary question that gets asked weekly, answered properly in c/glp1canada · 16 points · 9 months ago

Have you asked the pharmacist to check?

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comment on does gradient actually matter or is it forum lore at this point in c/hplc · 36 points · 9 months ago

Resolution between two peaks depends on retention, selectivity and efficiency. A shallower gradient buys retention and usually resolution, at the cost of peak width and run time.

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comment on [Meta] the EMS rule is doing its job and people should stop complaining in c/intlshipping · 118 points · 9 months ago

Asked Homopeptide which lines they hold regionally before ordering and got a straight list back. Changed what I ordered and when.

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comment on what would you tell week-1 you about contraception in c/glp1women · 15 points · 10 months ago

Perimenopause and all of this at once, and there is essentially nothing written about the combination anywhere.

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comment on reship — 19 things I got wrong before I got it right in c/intlshipping · 34 points · 11 months ago

Agreed on rigid packaging. It costs the shipper almost nothing and it predicts a lot about the rest of the operation.

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comment on [Results] 24 weeks on 12.5mg, full numbers, ask me anything boring in c/glp1women · 2 points · 1 year ago

Have you asked a pharmacist about the absorption question specifically?

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comment on help me understand SURMOUNT, I have read the wiki twice in c/tirzepatide · 59 points · 1 year ago

2.5mg is a four-week starting dose, not a maintenance dose. Worth being precise since people search these threads.

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comment on help me understand SURMOUNT, I have read the wiki twice in c/tirzepatide · 112 points · 1 year ago

Which week did the appetite change actually land for you?

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comment on reading 15mg threads from 2024 and half of it aged badly in c/tirzepatide · 59 points · 1 year ago

Disagree with the conversion table. There is no validated equivalence between the two molecules and posting one as though there is does real damage.

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comment on 4 months in and hepatic fat is still the thing I get wrong in c/survodutide · 7 points · 1 year ago

Agreed. The hepatic programme is the point of this compound and the weight discussion is a side effect of the side effect.

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comment on genuine question about dual agonist that I am slightly embarrassed to ask in c/survodutide · 193 points · 1 year ago

The honest evidence position, written out so this board does not drift.

Adding the standing caveat — unapproved compound, research material is not for human use.

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comment on [Vendor] ERP vs SGN on the same compound, same month — both cleared 98.0% in c/tirzepatide · 92 points · 1 year ago

Agreed, and the trial number is a mean of a very wide distribution — the tails are enormous and nobody posts from the middle.

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comment on [Lab] CPC cagri — Janoshik came back 98.1% against a claimed 97.5% in c/hplc · 177 points · 1 year ago

Resolution between two peaks depends on retention, selectivity and efficiency. A shallower gradient buys retention and usually resolution, at the cost of peak width and run time.

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comment on 4 months in and MASH is still the thing I get wrong in c/survodutide · 19 points · 1 year ago

fibrosis improvement without worsening steatohepatitis is the phrase to learn

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comment on why does nobody talk about gradient in c/hplc · 15 points · 1 year ago

Started reporting my own integrations with the baseline choice stated.

mass_spec_maggie is right — the integration choice is a decision and it should be stated alongside the result.

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comment on why does nobody talk about gradient in c/hplc · -29 points · 1 year ago

baseline choice is a decision, not a measurement

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comment on [Question] how do you actually verify cycle in c/glp1women · 26 points · 1 year ago

Yes — hair shedding tracks the rate of loss and it is temporary.

kaia_fonseca is right that a diagnosis and a finding are different things here.

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comment on [Question] how do you actually verify cycle in c/glp1women · 13 points · 1 year ago

Correcting myself upthread: the shedding started at week 26 for me, not the week I gave.

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comment on [Results] 47 weeks, 15kg, and GIP was the hard part in c/tirzepatide · 150 points · 1 year ago

It is a dual GIP and GLP-1 receptor agonist, and the GIP arm is the part that has no equivalent in the semaglutide threads. That is why the side-effect profile reads differently rather than just milder.

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comment on the Canada thing finally clicked for me and I want to write it down in c/glp1canada · 12 points · 1 year ago

Employer-sponsored plans have their own criteria and appeal processes, independent of the provincial formulary. Which one applies determines everything about the route.

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comment on genuine question about HPLC that I am slightly embarrassed to ask in c/hplc · 73 points · 1 year ago

you cannot report to two decimals off that baseline

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comment on [Meta] proposal — a flair for shipping posts in c/intlshipping · 40 points · 1 year ago

Careful — the supplier does not control the last mile and most of your variance is in it.

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comment on 15mg — my 12-week log, condensed into one table in c/tirzepatide · 187 points · 1 year ago

Correction to my own post above — I said 15mg and I have been on 10mg since the spring. Same argument, wrong number.

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comment on reading MASH threads from 2024 and half of it aged badly in c/survodutide · 3 points · 1 year ago

Independent purity results for this compound are very sparse across the whole site, which means any impression about consistency is built on almost nothing.

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comment on 7 months in and cycle is still the thing I get wrong in c/glp1women · 243 points · 1 year ago

The same dose genuinely feels different at different points in the month for me. Took a year to notice and it was in the log the whole time.

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comment on [Discussion] dual agonist is doing more work than we give it credit for in c/tirzepatide · 5 points · 1 year ago

SURMOUNT-1 ran 72 weeks with the top arm around 21% mean body weight change. SURPASS is the diabetes programme and reports glycaemic endpoints, so quoting the two interchangeably is a category error.

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comment on method development — 10 things I got wrong before I got it right in c/hplc · 19 points · 1 year ago

Do you have the mass, or only the UV trace?

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comment on small win: dual agonist stopped being a problem at week 50 in c/tirzepatide · 167 points · 1 year ago

Disagree with the conversion table. There is no validated equivalence between the two molecules and posting one as though there is does real damage.

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comment on reading chromatogram threads from 2024 and half of it aged badly in c/hplc · 96 points · 1 year ago

retention time alone is not identity

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comment on formulary — 11 things I got wrong before I got it right in c/glp1canada · 36 points · 1 year ago

Push back: approval by the national regulator says nothing about whether any plan will pay.

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comment on how much of what we believe about gradient actually comes from purity threads in c/hplc · 74 points · 1 year ago

That is area percent, not mass percent. The trace cannot give you the second one.

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comment on [Discussion] the GIP advice in here is 2 years out of date in c/tirzepatide · 5 points · 1 year ago

Which week did the appetite change actually land for you?

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comment on my ApoB moved and I cannot work out whether SURPASS is why in c/tirzepatide · 40 points · 2 years ago

Correction to my own post above — I said 10mg and I have been on 5mg since the spring. Same argument, wrong number.

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comment on [Lab] 24th independent test on CPC — 97.6% on a claimed 97.0%, and the trend is the interesting part in c/hplc · 0 points · 2 years ago

Is that baseline drawn by the software or by hand?

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comment on transit time — 12 things I got wrong before I got it right in c/intlshipping · 29 points · 2 years ago

Do they publish a reship policy, and did you read it before ordering?

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comment on [Lab] 16th independent test on ERP — 97.4% on a claimed 97.0%, and the trend is the interesting part in c/hplc · 23 points · 2 years ago

Resolution between two peaks depends on retention, selectivity and efficiency.

Disagreeing with this bit: that spread is ordinary inter-lab variance, not a disagreement about the material.

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comment on [Meta] the tirzepatide rule is doing its job and people should stop complaining in c/tirzepatide · 87 points · 2 years ago

Yes — 10mg being a genuine landing place for a lot of people is underrated. There is no medal for 15.

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comment on reading transit time threads from 2024 and half of it aged badly in c/intlshipping · 31 points · 2 years ago

a quoted lead time you can hold them to is worth more than a fast one you cannot

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comment on [Question] how do you actually verify gradient in c/hplc · 0 points · 2 years ago

That figure cannot be quoted to two decimals off that baseline. The precision is not in the data.

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