my eGFR moved and I cannot work out whether HPLC is why
Week 37 update. 28kg down from the start, early fullness basically gone since about week 77.
Things that worked: consistency, protein at breakfast, walking more than I want to. Things that did not: everything I bought on the internet to help with early fullness.
The part that surprised me is how much of this is admin. Ordering, storing, logging, remembering. Nobody mentions that the hard bit is not the drug, it is the routine.
Happy to answer anything. Please do not ask me what dose you should be on.
best — the order this archive was captured in
What was the column and what gradient?
axis labels included, always
axis labels included, always
Yes, exactly this, and it is the bit that took me 41 weeks to accept.
What was the column and what gradient?
Strongly agree. Largest single impurity tells a different story than total purity.
Not convinced. The evidence does not support that reading.
Injection volume and flow rate? Those affect resolution.
A shoulder on the main peak that 13 analysts integrated 19 different ways. Same trace, 98.6 spread.
Strongly agree. Largest single impurity tells a different story than total purity.
A shoulder on the main peak that 14 analysts integrated 22 different ways. Same trace, 97.4 spread.
the detector wavelength matters more than people think
A shoulder on the main peak that 14 analysts integrated 22 different ways.
Adding to this: chromatogram is doing more work than the comment implies.
Yeah, the chromatogram profile matters more than the headline number.
Tracking number removed. It identifies both ends of a shipment.
the gradient is doing the separation work, not the column alone
state the method: column, gradient, detection wavelength, injection volume
What was the column and what gradient?
the gradient is doing the separation work, not the column alone
the gradient is doing the separation work, not the column alone
Yes, exactly this, and it is the bit that took me 82 weeks to accept.
This is the correct method framing. Column and gradient are load-bearing fields.
integration decision on a shoulder changes your number by half a point on its own
area% and mass% are not the same and this whole post conflates them
integration decision on a shoulder changes your number by half a point on its own
Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.
Water content matters more than people think. If a vial is carrying residual moisture, your "10mg" is not 10mg of peptide.
a round-robin on baseline integration would be genuinely useful
Disagree. What you are describing is consistent with LC-MS, not with what you concluded.
Detection wavelength? integration and that changes at different wavelengths.
- 1What was the column and what gradient?10 comments in this branch · started by u/hana_lehtinen
- 2What was the column and what gradient?8 comments in this branch · started by u/peak_area_pete