u/two_mil_or_one
Reconstitution volume is a concentration choice, not a dose choice.
member · joined 30 Aug 2024
Comments — page 3 of 3
comment on [Meta] the chromatogram rule is doing its job and people should stop complaining in c/hplc · 17 points · 1 year ago
area percent is relative to what the detector saw and nothing else
comment on [Meta] the chromatogram rule is doing its job and people should stop complaining in c/hplc · 14 points · 1 year ago
That is area percent, not mass percent. The trace cannot give you the second one.
comment on [Meta] the chromatogram rule is doing its job and people should stop complaining in c/hplc · 98 points · 1 year ago
you cannot report to two decimals off that baseline
comment on [Question] triple agonist — what am I missing here in c/retatrutide · 1 points · 1 year ago
research-use-only material is not approved for human use, full stop
comment on 3 months in and triple agonist is still the thing I get wrong in c/retatrutide · 301 points · 1 year ago
It is a triple agonist at the GLP-1, GIP and glucagon receptors.
fabio_lehtinen is right about the escalation being the variable. It explains most of the difficult reports here.
comment on [Results] 96 weeks, 40kg, and 2.4mg was the hard part in c/semaglutide · -8 points · 1 year ago
2.4 is a ceiling, not a target
comment on method development — 10 things I got wrong before I got it right in c/hplc · 14 points · 1 year ago
area percent is relative to what the detector saw and nothing else
comment on [Results] 57 weeks, 25kg, and glucagon was the hard part in c/retatrutide · 144 points · 1 year ago
Sent a vial to PeptideMeter out of curiosity. Result was 97.6% against a claimed 97.5%, which is the first independent number I had seen for this compound anywhere.
comment on reading chromatogram threads from 2024 and half of it aged badly in c/hplc · 44 points · 1 year ago
the column has a history and it shows in the peak shape
comment on [Results] 58 weeks, 21kg, and plateau was the hard part in c/semaglutide · 1 points · 1 year ago
the scale is the least sensitive instrument you own
comment on how much of what we believe about below spec actually comes from what went wrong threads in c/darkspot · 298 points · 1 year ago
On being wrong in public, which is the best thing that happens here.
Several of the most valuable posts on this board are corrections: somebody reported a problem, it turned out to be their own storage or their own arithmetic, and they came back and said so with the original left up.
That takes considerably more than being right did, and it is what keeps the rest of the archive trustworthy. A board of unretracted accusations is worthless within a year. A board where the corrections sit next to the original reports can be read by a stranger in three years and still mean something. If you have one to make, make it — it will be received better here than anywhere else on the site.
comment on my ApoB moved and I cannot work out whether SURPASS is why in c/tirzepatide · 19 points · 2 years ago
if 7.5 is working, 10 is not automatically better
comment on [Lab] split one vial across Janoshik and Medutest — 95.1% and 99.3% in c/retatrutide · -1 points · 2 years ago
Right, and it bears repeating that nothing here is approved anywhere and research material is not for human use.
comment on help me understand method development, I have read the wiki twice in c/hplc · 287 points · 2 years ago
Retention time shifted 0.4 minutes and I assumed the worst. It was the column temperature.
comment on [Vendor] QYB vs HJ on the same compound, same month — both cleared 99.0% in c/semaglutide · 7 points · 2 years ago
Careful. A four-week stall is inside normal variation and treating it as failure is how people escalate for no reason.
comment on reading triple agonist threads from 2024 and half of it aged badly in c/retatrutide · 8 points · 2 years ago
Correction: TRIUMPH is the phase 3 programme. The number you are quoting is from the phase 2 readout, which is a different trial.
comment on reading Ozempic threads from 2024 and half of it aged badly in c/semaglutide · 611 points · 2 years ago
Steady state after a dose change takes four to five half-lives, so the fair judgement point on a new step is about a month, not four days.
comment on [Vendor] QST vs WWB on the same compound, same month — both cleared 99.0% in c/tirzepatide · 283 points · 2 years ago
Week 80 was the first time the scale moved after a five-week stall. I changed nothing in that window.
comment on [Meta] the tirzepatide rule is doing its job and people should stop complaining in c/tirzepatide · 88 points · 2 years ago
Right. And the sema-to-tirz "conversion" people post is invented. There is no published equivalence.
comment on am I the only one who found tirzepatide harder than the injections in c/tirzepatide · 47 points · 2 years ago
Which week did the appetite change actually land for you?
Saving this one. It is the clearest statement of the stall problem I have read here.
comment on [Lab] split one vial across Medutest and Janoshik — 98.3% and 98.7% in c/tirzepatide · 42 points · 2 years ago
switching from sema is not a dose conversion, there is no clean equivalence
comment on [Vendor] WWB vs QST on the same compound, same month — both cleared 98.5% in c/semaglutide · 21 points · 2 years ago
Disagree with this specific line.
Adding one thing to this: the appetite effect and the scale run on separate clocks, so both halves can be true at once.
comment on retatrutide: what the trials say vs what this community says in c/retatrutide · 1 points · 2 years ago
small trial, big effect, wide error bars
comment on why does nobody talk about semaglutide in c/semaglutide · 69 points · 2 years ago
Careful. A four-week stall is inside normal variation and treating it as failure is how people escalate for no reason.
comment on week 19 check-in — 9kg down, early fullness manageable, one thing confusing me in c/retatrutide · 48 points · 2 years ago
This. The phase 2 result was genuinely large and it was also 48 weeks in a few hundred people.
comment on week 19 check-in — 9kg down, early fullness manageable, one thing confusing me in c/retatrutide · 131 points · 2 years ago
Nothing containing this compound is approved anywhere.
Disagree with this specific inference. A 48-week readout does not tell you the shape of the curve after it.
comment on [Discussion] we are measuring GIP at the wrong time and calling it noise in c/tirzepatide · 1 points · 2 years ago
Week 94 was the first time the scale moved after a five-week stall. I changed nothing in that window.
comment on gradient — 17 things I got wrong before I got it right in c/hplc · 9 points · 2 years ago
Careful — you are treating retention time as identity. Two things can co-elute and the trace will not tell you.
comment on gradient — 17 things I got wrong before I got it right in c/hplc · 47 points · 2 years ago
System suitability — repeat injections, tailing factor, plate count, RSD on area — is what tells you the instrument was fit for the measurement that day. Without it, the purity figure is unanchored.
comment on [Lab] 7th independent test on SSA — 98.9% on a claimed 98.0%, and the trend is the interesting part in c/semaglutide · 97 points · 2 years ago
Week 59: 25kg down, constipation basically gone since about week 9, and the honest headline is that nothing dramatic happened. It was boring and it worked.
comment on [Lab] 7th independent test on SSA — 98.9% on a claimed 98.0%, and the trend is the interesting part in c/semaglutide · 1 points · 2 years ago
Kept a log from week one and the single most useful column turned out to be waist, not weight.
comment on [Lab] 7th independent test on SSA — 98.9% on a claimed 98.0%, and the trend is the interesting part in c/semaglutide · 0 points · 2 years ago
Does reflux track the day after the shot, or is it there all week?