Short version of the title, which is already short: split one vial across Janoshik and Medutest — 98.7% and 98.3%. Longer version underneath. Since the title puts…
u/andres_restrepo
Contributes reviews on supplier material. Based in Accra.
member · joined 16 Jul 2025
Overview — page 3 of 3
comment on [Question] timeframe — what am I missing here in c/progresspics · 26 points · 1 year ago
Rate of change is not a virtue. Slower trajectories are as durable as fast ones and are considerably better represented on this board than the front page suggests.
comment on [Question] how do you actually verify DEXA in c/glp1muscle · 53 points · 1 year ago
training volume matters more than training novelty
comment on [Discussion] ferritin is doing more work than we give it credit for in c/bloodwork · 9 points · 1 year ago
nothing on this board interprets your results for you
comment on [Question] DEXA — what am I missing here in c/glp1muscle · 1 points · 1 year ago
Yes. Nobody here is prescribing training or nutrition and the good posts say so.
comment on [Meta] proposal — a flair for tapering posts in c/tapering · 63 points · 1 year ago
Withdrawal studies across this class consistently show substantial regain after discontinuation, with appetite typically returning before weight changes. That is a description of the pharmacology of a chronic condition.
comment on [Discussion] progress is doing more work than we give it credit for in c/progresspics · 1 points · 1 year ago
Right — the non-scale victories are the ones I remember. The numbers all blur together after a while.
comment on related substances — 9 things I got wrong before I got it right in c/coa · 30 points · 1 year ago
water content is on there and everyone skips it
comment on [Discussion] can we stop arguing about dose escalation until somebody posts a number in c/retatrutide · 49 points · 1 year ago
the energy-expenditure story is mechanistically interesting and clinically unproven
comment on [Lab] split one vial across Janoshik and Medutest — 98.7% and 98.3% in c/hplc · 5 points · 1 year ago
LC-MS for identity, UV for relative quantity
comment on [Lab] split one vial across Janoshik and Medutest — 98.7% and 98.3% in c/hplc · 11 points · 1 year ago
Correcting myself upthread: I said the gradient was linear and looking again it has a hold in the middle.
comment on [Lab] split one vial across Janoshik and Medutest — 98.7% and 98.3% in c/hplc · 30 points · 1 year ago
What wavelength, and what was the gradient?
comment on [Lab] split one vial across Janoshik and Medutest — 98.7% and 98.3% in c/hplc · 1 points · 1 year ago
area percent is relative to what the detector saw and nothing else
comment on unpopular opinion: most of what gets said here about certificate of analysis is guesswork in c/coa · 40 points · 1 year ago
a certificate with no method line is decorative
comment on [Question] chromatogram — what am I missing here in c/hplc · 32 points · 1 year ago
Ran a blank after a high-concentration injection and found the carryover I had been calling an impurity.
comment on goal — my 23-week log, condensed into one table in c/progresspics · 416 points · 1 year ago
Text-only posting removes the comparison mechanism that makes image boards difficult, which is why this community adopted the rule and has kept it.
comment on [Lab] split one vial across PeptideMeter and VendorInvestigate — 96.8% and 99.1% in c/hplc · 488 points · 1 year ago
Area percent is the integrated area of your peak over the total integrated area at one wavelength on one gradient. Change any of those and the number changes without the sample changing.
comment on is it normal to get early fullness at week 64 in c/retatrutide · 2 points · 1 year ago
heart rate is the thing people report watching
comment on why does nobody talk about water content in c/coa · 769 points · 1 year ago
Careful — "the metadata looks odd" is a reason to ask a question, not a conclusion. Re-issues are ordinary.
comment on why does nobody talk about water content in c/coa · -29 points · 1 year ago
What does the method line actually say? Not the technique — the column and the gradient.
comment on the data logger question that gets asked weekly, answered properly in c/coldchain · 113 points · 1 year ago
ask what storage condition the stability statement was written against
comment on unpopular opinion: most of what gets said here about phase 2 is guesswork in c/retatrutide · 1.3k points · 1 year ago
This. The phase 2 result was genuinely large and it was also 48 weeks in a few hundred people.
comment on reading lipids threads from 2024 and half of it aged badly in c/bloodwork · 4 points · 1 year ago
fasting state and time of day change more than people expect
comment on [Discussion] LC-MS is doing more work than we give it credit for in c/hplc · 0 points · 1 year ago
Area percent is the integrated area of your peak over the total integrated area at one wavelength on one gradient. Change any of those and the number changes without the sample changing.
comment on [Results] 45 weeks on 0.25mg, full numbers, ask me anything boring in c/retatrutide · 442 points · 1 year ago
Went up slowly, deliberately, because everything on this board says the escalation is where trouble lives. Uneventful so far and I am not going to pretend that is a finding.
comment on [Lab] MKM cagri — Medutest came back 97.2% against a claimed 97.0% in c/hplc · 79 points · 1 year ago
Yes. Retention time is a hypothesis about identity. Mass is the answer.
comment on [Lab] split one vial across Janoshik and Medutest — 98.1% and 97.6% in c/coa · 20 points · 1 year ago
Sent one vial to VendorInvestigate and Medutest. 99.2% and a claimed 98.5%. Cost me more than the vial and I would do it again.
comment on 3 months in and triple agonist is still the thing I get wrong in c/retatrutide · 33 points · 1 year ago
Right, and it bears repeating that nothing here is approved anywhere and research material is not for human use.
comment on [Results] 12 weeks on 0.5mg, full numbers, ask me anything boring in c/progresspics · 1 points · 1 year ago
Stopped reading the fastest posts here for a month and my mood improved considerably.
comment on the HPLC question that gets asked weekly, answered properly in c/hplc · 79 points · 1 year 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 the ApoB thing finally clicked for me and I want to write it down in c/bloodwork · 50 points · 1 year ago
That comparison crosses two labs with different assays. The difference you are describing may be the method.
comment on does goal actually matter or is it forum lore at this point in c/progresspics · 81 points · 1 year ago
Small correction, kindly meant: that is a range rather than a regain.
Agreed — measurements over photographs, every time, for anybody trying to actually track something.
comment on [Discussion] we are measuring regain at the wrong time and calling it noise in c/tapering · 56 points · 1 year ago
Careful — interval stretching and dose reduction are different interventions and your post uses them interchangeably.
comment on help me understand progress, I have read the wiki twice in c/progresspics · 16 points · 1 year ago
Agreed — text only was the best rule this board ever adopted. The posts are about what actually changed rather than about lighting.
comment on how much of what we believe about batch actually comes from purity threads in c/coa · 134 points · 1 year 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.
comment on [Discussion] lyophilised is doing more work than we give it credit for in c/coldchain · 16 points · 1 year ago
Powder or already in solution?
comment on [Discussion] lyophilised is doing more work than we give it credit for in c/coldchain · 165 points · 1 year ago
ask which lines are held in regional stock before you order in July
lyophilised is doing more work than we give it credit for. Not a hot take, just something I have not seen said plainly here. Put a logger in three consecutive orders.…
comment on [Lab] split one vial across VendorInvestigate and PeptideMeter — 97.2% and 98.4% in c/coa · 112 points · 1 year 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.
comment on cold chain — 23 things I got wrong before I got it right in c/coldchain · 1 points · 1 year ago
Agreed. The dry powder is the robust state; it is the solution that needs the care.