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RO

u/rohan_steiner

Contributes reviews on supplier material. Based in Dijon.

member · joined 14 May 2025

29,026post karma
16,710comment karma
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161comments

Overview — page 2 of 3

comment on genuine question about sulphur burps that I am slightly embarrassed to ask in c/sideeffects · 22 points · 2 months ago

the early fullness that arrives at week 77 out of nowhere is usually something else

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comment on [PSA] food noise is not what most of this community thinks it is in c/semaglutide · 196 points · 3 months ago

STEP-1 ran 68 weeks and landed just under 15% mean body weight change on 2.4mg. It is an average of a wide distribution, not a target you have missed.

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comment on [Question] certificate of analysis — what am I missing here in c/coa · 114 points · 3 months ago

Yes. The structure of the document matters at least as much as the number printed on it.

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comment on 6 months in and sulphur burps are still the thing I get wrong in c/sideeffects · 199 points · 3 months ago

smaller meals, earlier, is the boring advice that works

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comment on my hs-CRP moved and I cannot work out whether heart rate is why in c/sideeffects · 70 points · 3 months ago

Has anything else changed in the same window?

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comment on [Discussion] we are measuring packaging at the wrong time and calling it noise in c/intlshipping · 16 points · 3 months ago

That is a packaging observation, not a transit observation. Worth posting, worth separating.

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comment on sulphur burps are the most under-discussed thing on this board in c/sideeffects · 1 points · 4 months ago

Most of the common complaints trace back to slowed gastric emptying — early fullness, reflux, nausea after a large or fatty meal. That is also why meal size and speed change the experience more than anything else.

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comment on [Discussion] can we stop arguing about COA until somebody posts a number in c/coa · 152 points · 4 months ago

the counterion is part of the mass you paid for

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comment on anyone else notice fatigue kicking in around week 46 in c/sideeffects · 6 points · 4 months ago

the food noise going quiet is the effect people came for, and early fullness is the toll for the first fortnight

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comment on [Discussion] can we stop arguing about EMS until somebody posts a number in c/intlshipping · 60 points · 4 months ago

Small fix — shipped from the regional warehouse, not from origin, which is why the number looks unusual.

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comment on Canada: API source, and what it actually costs here in c/compounding · 0 points · 4 months ago

A beyond-use date derived from published stability data means something different from one assigned by default rule. Asking which is a fair question and the answer is usually available.

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comment on [Discussion] can we stop arguing about EMS until somebody posts a number in c/intlshipping · 32 points · 4 months ago

Same lane in a different season for comparison?

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comment on [Discussion] can we stop arguing about EMS until somebody posts a number in c/intlshipping · 30 points · 4 months ago

Correction: that was clearance time, not carrier time. The lane table separates them for exactly this reason.

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comment on anyone else notice constipation kicking in around week 7 in c/sideeffects · 88 points · 4 months ago

The fatigue turned out to be that I was eating about a third of what I thought I was. Tracked it for a week and the mystery evaporated.

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comment on SURPASS — 24 things I got wrong before I got it right in c/trialwatch · 71 points · 4 months ago

The discontinuation numbers were the most useful thing in the paper for me and they were in a supplementary table.

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comment on carrier — 23 things I got wrong before I got it right in c/intlshipping · 1 points · 5 months ago

I would not read a single slow shipment as a lane change. Post it and let the median move if it is real.

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comment on [Vendor] GGPeps vs GL Biochem on the same compound, same month — both cleared 99.0% in c/coa · 1 points · 5 months ago

area% is not mass%, and the difference is the whole game

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comment on [Question] how do you actually verify Ozempic in c/semaglutide · 48 points · 5 months ago

the scale is the least sensitive instrument you own

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comment on genuine question about data logger that I am slightly embarrassed to ask in c/coldchain · 39 points · 5 months ago

Small fix — refrigerated, not frozen, once it is in solution.

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comment on does personal import actually matter or is it forum lore at this point in c/customs · 3 points · 5 months ago

Cosigning on paperwork. The boring documents are the ones that matter when a process starts.

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comment on area percent — 13 things I got wrong before I got it right in c/coa · 71 points · 5 months ago

Area percent is the peak area of your compound over the total integrated area, at one wavelength, on one gradient. It is a relative measure of what the detector saw, not a mass fraction of the vial.

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comment on [Discussion] telehealth is doing more work than we give it credit for in c/compounding · 19 points · 5 months ago

salt forms are the recurring argument and the answer is boring

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comment on Spain: cold chain, and what it actually costs here in c/coldchain · 106 points · 5 months ago

Moved everything off the fridge door after reading a thread here and my temperature log immediately got boring.

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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 · 19 points · 5 months 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.

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comment on excursion — 20 things I got wrong before I got it right in c/coldchain · 21 points · 6 months ago

Lyophilisation removes the water that drives most degradation pathways. That is why the dry cake is comparatively robust and the reconstituted solution is not.

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comment on reading water content threads from 2024 and half of it aged badly in c/coa · 71 points · 6 months ago

axis labels included, always

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comment on switched from 0.25mg to 2.4mg and fatigue got better, not worse in c/sideeffects · 21 points · 6 months ago

Is it every week or did it start at a particular dose?

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comment on [Question] is 98.3% actually fine or am I being sold a rounding error in c/coa · 4 points · 6 months ago

Started keeping a folder of every certificate I have been sent. The ones that itemise impurities are a small group and they are mostly the same suppliers.

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comment on [Question] Ireland — has anyone got a straight answer on 503B in c/compounding · 37 points · 7 months ago

a 503B has to register and report, so there is a paper trail to ask for

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comment on what would you tell week-1 you about reflux in c/sideeffects · -31 points · 7 months ago

the first fortnight after a step is the worst of it, then it settles

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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

LC-MS gives you identity; UV purity gives you a relative quantity. A document with the first and not the second, or the reverse, is answering half the question.

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comment on [Discussion] can we stop arguing about related substances until somebody posts a number in c/coa · 69 points · 7 months ago

Asked for the storage condition behind the stability statement. Got it in a sentence. It is a two-line email and almost nobody sends it.

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comment on the STEP question that gets asked weekly, answered properly in c/trialwatch · 265 points · 7 months ago

Open-label extensions lose their randomisation. Anybody still enrolled at week 104 is a selected group and the numbers describe that group.

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comment on [Discussion] can we stop arguing about related substances until somebody posts a number in c/coa · 484 points · 7 months ago

UV at 214nm sees the peptide bond and picks up almost everything; at 280nm you are looking at aromatics only. Which wavelength the number came from is part of the number.

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comment on [Discussion] the shortage list advice in here is 3 years out of date in c/compounding · 5 points · 8 months ago

salt forms are the recurring argument and the answer is boring

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comment on [Results] 87 weeks, 17kg, and reflux was the hard part in c/sideeffects · 1 points · 8 months ago

injection-site soreness on day two and gone by day four is the standard shape

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comment on [Question] how do you actually verify EMS in c/intlshipping · 66 points · 8 months ago

Asked QSC 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 three years of declared value threads, summarised so you do not have to read them in c/customs · 119 points · 9 months ago

That is a question for somebody qualified where you live, not for a ranked feed.

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comment on [Meta] proposal — a flair for related substances posts in c/coa · 58 points · 9 months ago

The document I was worried about turned out to be a re-issue with a later creation date. Asked, got the original, entirely ordinary.

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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.