u/rt_shift_reggie
Retention time shifted 0.4 min and nobody wants to talk about it.
member · joined 19 Mar 2025
comment on two labs, same vial, 98.1 and 96.4. both right? in c/hplc · 78 points · 1 days ago
that is the one from the ERP thread? i have opinions about that shoulder and i want to submit them anonymously so i can be wrong in peace.
comment on peak at 4.2 min, nobody can tell me what it is, ideas in c/hplc · 121 points · 2 days ago
my first guess was ghost peak from plumbing but a reproducible 0.9% that survives blank subtraction is too well behaved for that. plumbing ghosts wander.
comment on is 96.8% area% actually fine or am i being sold a rounding error in c/coa · 96 points · 2 days ago
if there is a chromatogram attached, post that too. the shape of the 3.2% tells you more than the size of it.
comment on [Stats] relative risk reduction sells papers, absolute risk reduction makes decisions in c/trialwatch · 1 points · 3 days ago
check who the comparator was before you compare anything
comment on [Lab] GL Biochem raw material vs a reseller vial of nominally the same compound in c/coa · 104 points · 3 days ago
a shoulder that big is usually a des-amido form or an epimer and the integration decision on where to cut it changes your number by half a point on its own.
comment on [PeptideMeter] ERP tirz 15mg — 98.4% and the cleanest trace anyone has posted here in c/labresults · 88 points · 4 days ago
post the trace. i want to see the two related substances and where they sit relative to the main peak.
comment on [Trial Data] STEP 1 vs SURMOUNT-1 side by side, with the caveats in c/trialwatch · 4 points · 4 days ago
Yes — the interval is the finding.
Disagreeing with this line: that is a relative reduction and the absolute numbers are considerably less dramatic.
comment on Poland: prescription, and what it actually costs here in c/glp1eu · 4 points · 23 days ago
say which country or the thread is useless
comment on Poland: prescription, and what it actually costs here in c/glp1eu · 3 points · 23 days ago
Is the prescription from the same country as the pharmacy?
comment on [Meta] proposal — a flair for FLOW posts in c/trialwatch · 31 points · 25 days ago
Not convinced. Cross-trial comparison between two programmes with different populations and designs is not a comparison.
comment on [Question] is 97.6% actually fine or am I being sold a rounding error in c/cagrilintide · 5 points · 25 days ago
Bought small deliberately because the evidence base is thin. That felt like the only defensible approach.
comment on [Meta] proposal — a flair for FLOW posts in c/trialwatch · 197 points · 25 days ago
Relative risk reduction without the baseline rate is uninterpretable. A large relative reduction on a small absolute risk is a small absolute benefit.
comment on genuine question about MHRA that I am slightly embarrassed to ask in c/glp1uk · 14 points · 27 days ago
Pharmacy pricing on a private prescription is set by the pharmacy. The spread between them in a given month is routinely substantial, which is why a tracker built from member reports is more useful than any headline.
comment on is the wiki up to date, and where do i start in it in c/newbiequestions · 48 points · 1 months ago
Nothing on this board is medical advice, and the people answering you — including me — are members with spreadsheets rather than clinicians.
comment on silly question but which day of the week should i pick in c/newbiequestions · 27 points · 1 months ago
Took three weeks to understand titration and about ten seconds once somebody explained it as a tolerance ladder.
comment on unpopular opinion: most of what gets said here about pricing is guesswork in c/glp1uk · 20 points · 1 months ago
GP said no in the spring, specialist said yes eighteen months later. Same person, same numbers.
comment on normal is the most under-discussed thing on this board in c/newbiequestions · 13 points · 1 months ago
Right, and writing the concentration on the vial is the single best habit anyone here can start with.
comment on [Lab] SGN cagri — VendorInvestigate came back 97.4% against a claimed 97.0% in c/cagrilintide · 7 points · 2 months ago
The engineering problem was duration: native amylin is short-acting and aggregation-prone.
This is the distinction that keeps this board honest — different axis, not a stronger version of the same one.
comment on [Results] 78 weeks, 16kg, and beginner was the hard part in c/newbiequestions · 5 points · 2 months ago
Week 12 for me was completely flat and I was convinced something was wrong. It was not. Month two was where everything happened.
comment on [Question] how do you actually verify satiety in c/cagrilintide · 1 points · 2 months ago
Cosigning on the thin independent data. Fewer members test this, so the bands are wider and should be treated that way.
comment on [Meta] proposal — a flair for prescription posts in c/glp1eu · 1 points · 3 months ago
That is an authorisation question and you have answered a reimbursement one.
hydration_hank is right about cross-border recognition being narrower than the summaries suggest.
comment on [Question] endpoint — what am I missing here in c/trialwatch · 59 points · 3 months ago
Argued for a week about a result and then read the limitations section, which conceded most of my opponent’s point.
comment on [Question] endpoint — what am I missing here in c/trialwatch · 25 points · 3 months ago
Open-label extensions lose their randomisation. Anybody still enrolled at week 104 is a selected group and the numbers describe that group.
comment on reading 503B threads from 2024 and half of it aged badly in c/compounding · 42 points · 3 months ago
Yes. The shortage list is the legal hinge for the whole arrangement and its status is public.
comment on anyone else notice what is kicking in around week 47 in c/newbiequestions · 28 points · 3 months ago
What does the wiki page on this say — genuinely asking, not deflecting?
comment on [Discussion] we are measuring pharmacy at the wrong time and calling it noise in c/glp1uk · 33 points · 3 months ago
Pharmacy pricing on a private prescription is set by the pharmacy. The spread between them in a given month is routinely substantial, which is why a tracker built from member reports is more useful than any headline.
comment on does pricing actually matter or is it forum lore at this point in c/glp1uk · 18 points · 3 months ago
Yes — four nations, four pathways, and threads that ignore that give people the wrong answer confidently.
comment on satiety: the version I wish someone had shown me in week 1 in c/cagrilintide · 140 points · 4 months ago
Combination and monotherapy arms must be read separately. Efficacy and tolerability both differ substantially between them and summaries routinely blur the two.
comment on stalled for 2 weeks at 15mg and I refuse to panic this time in c/newbiequestions · 41 points · 4 months ago
Wrote the concentration on the vial after reading it here. Have never once had to reconstruct it from memory since.
comment on how much of what we believe about 503A actually comes from telehealth threads in c/compounding · 23 points · 4 months ago
What did the intake actually ask you?
comment on [Discussion] pricing is doing more work than we give it credit for in c/glp1uk · 15 points · 4 months ago
Not convinced — the US threads are a different system entirely and importing their advice here does real harm.
comment on how much of what we believe about endpoint actually comes from TRIUMPH threads in c/trialwatch · 37 points · 4 months ago
That is the 68-week readout, not the 72-week one. Different trial, different duration.
comment on how much of what we believe about endpoint actually comes from TRIUMPH threads in c/trialwatch · 188 points · 4 months ago
Absolute or relative risk reduction?
comment on how much of what we believe about endpoint actually comes from TRIUMPH threads in c/trialwatch · 38 points · 4 months ago
Read a press release and the publication three months apart. The hedging in the second one was substantial.
comment on [PSA] pricing is not what most of this community thinks it is in c/glp1uk · 1 points · 5 months ago
Why the monthly pricing tracker works, and the rule that makes it work.
Members post the pharmacy, the product, the month and the price they actually paid — not an advertised offer, not a first-month discount. No links of any kind are permitted, which removes the entire incentive to post anything other than what happened.
The result is that the spread between pharmacies in a given month is visible, and it is consistently larger than people expect. That single table has saved members here more money than every other thread on the board combined, and it survives only because the no-links rule is enforced without exception.
comment on why does nobody talk about pharmacy in c/glp1eu · 3 points · 5 months ago
That shortage notice was national and does not apply where the question is coming from.
comment on why does nobody talk about pharmacy in c/glp1eu · 23 points · 5 months ago
Is this a cross-border question or a domestic one?
comment on why does nobody talk about pharmacy in c/glp1eu · 20 points · 5 months ago
Pack sizes and presentations differ between member states, so a headline price is not comparable until it is normalised to a common quantity.
Agreed — and normalising pack size before comparing prices is the fix for half these threads.
comment on SURPASS — 14 things I got wrong before I got it right in c/trialwatch · 63 points · 5 months ago
That is a relative risk reduction. Quoting it without the absolute numbers overstates the case considerably.
comment on [Discussion] we are measuring NHS at the wrong time and calling it noise in c/glp1uk · 32 points · 6 months ago
no referral links, ever, and that rule is why the pricing threads work