u/rasmus_petrescu
Contributes reviews on supplier material. Based in Bochum.
member · joined 16 Jul 2025
Comments — page 4 of 5
comment on Spain: gradient, and what it actually costs here in c/hplc · 76 points · 1 year ago
related substances are where the story lives, not the main peak
comment on [Question] perimenopause — what am I missing here in c/glp1women · 6 points · 1 year ago
the cycle tracking data matters, keep it private
comment on the ATTAIN thing finally clicked for me and I want to write it down in c/orforglipron · 3 points · 1 year ago
Maintenance for 21 months now. Weight moves within about 3kg and the dose is a quarter of what it peaked at.
comment on purity — 8 things I got wrong before I got it right in c/hplc · 15 points · 1 year ago
Injection volume and flow rate? Those affect resolution.
comment on stalled for 10 weeks at 5mg and I refuse to panic this time in c/hplc · 935 points · 1 year ago
I am going to push back on this slightly.
comment on help me understand PCOS, I have read the wiki twice in c/glp1women · 47 points · 1 year ago
contraception interaction claims need citation
comment on stalled for 13 weeks at 12.5mg and I refuse to panic this time in c/glp1muscle · 102 points · 1 year ago
DEXA twice yearly is the pattern
comment on [Discussion] fertility is doing more work than we give it credit for in c/glp1women · 33 points · 1 year ago
pregnancy and trying-to-conceive get clinician pointer, not community advice
comment on [Question] New Zealand — has anyone got a straight answer on non-peptide in c/orforglipron · 1 points · 1 year ago
phase 9 data is interesting, phase 34 will tell the real story
Disagree on that part. 98.7% and 99.3% on the same vial is normal.
comment on goal weight — 16 things I got wrong before I got it right in c/maintenancephase · 20 points · 1 year ago
the maintenance question changes at maintenance
comment on week 56 check-in — 6kg down, constipation manageable, one thing confusing me in c/glp1women · 181 points · 1 year ago
Yeah, insulin resistance is under-researched.
comment on 7 months in and fertility is still the thing I get wrong in c/glp1women · 138 points · 1 year ago
Strongly agree. Cycle changes are documented.
comment on [Question] how do you actually verify LC-MS in c/hplc · 21 points · 2 years ago
co-elution is real and purity is usually not enough to resolve it
comment on 20 months in and non-peptide is still the thing I get wrong in c/orforglipron · 24 points · 2 years ago
the absorption problem is solved by non-peptide structure
comment on the integration thing finally clicked for me and I want to write it down in c/hplc · 219 points · 2 years ago
Yeah, the chromatogram profile matters more than the headline number.
comment on [Lab] 16th independent test on BCH, and the trend is the interesting part in c/hplc · 421 points · 2 years ago
Detection wavelength? chromatogram and that changes at different wavelengths.
comment on [Lab] SGN cagri — VendorInvestigate came back 93.7% against a claimed 94.2% in c/hplc · 1.7k points · 2 years ago
Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.
comment on lowest effective dose — 4 things I got wrong before I got it right in c/maintenancephase · 16 points · 2 years ago
Strongly agree. Lowest effective dose is a real discovery process.
comment on [Question] Ireland — has anyone got a straight answer on chromatogram in c/hplc · 99 points · 2 years ago
co-elution is real and LC-MS is usually not enough to resolve it
comment on is it normal to get nausea at week 34 in c/maintenancephase · 154 points · 2 years ago
Disagree but this is the good kind of wrong — it is specific enough to be checked.