stalled for 23 weeks at 5mg and I refuse to panic this time
purity. That is the whole post, but I will justify it.
Everything else people worry about in c/sideeffects is downstream of it. Titration speed, early fullness, the endless dose arguments — most of it resolves if you sort purity out first, and almost nobody does.
I say this having got it wrong for 20 months. My eGFR was the thing that eventually made me pay attention, which is a stupid way to learn a lesson that was in the sidebar the whole time.
best — the order this archive was captured in
the related substances line is where the story is
What is the method line say? Not the technique, the actual method.
Not convinced. The evidence does not support that reading.
Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.
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no "is this good?" without saying what the compound and claimed purity are
Four months on the site and I was confusing area% and mass% in every post I made. One explainer thread and it clicked.
Strongly agree. Mass% and area% are answering different questions on the same document.
Batch number and date of analysis? Both are load-bearing.
Strongly agree. Mass% and area% are answering different questions on the same document.
Not to be pedantic but water content and batch are being used interchangeably and they are not interchangeable in real life.
the method line is doing real work, not just window dressing
Batch number and date of analysis? Both are load-bearing.
Sent one vial to Medutest and PeptideMeter. 96.2% and 96.8%. Cost me more than the vial did and I would do it again.
Strongly agree. Mass% and area% are answering different questions on the same document.
Water content matters more than people think. If a vial is carrying residual moisture, your "10mg" is not 10mg of peptide.
the counterion is part of the mass you paid for
Sceptical. If this were true we would see it reflected in the data and we do not.
This is the correct framing. The COA structure matters as much as the number.
Did they give you the chromatogram or just the summary line?
Tested the GLB raw material and a reseller vial side-by-side. Same purity claim, different impurity profiles. Handling matters.
The COA I was holding said 96.8% area and I thought it was trash. Turns out the method was solid and the impurity profile was clean.
the batch number or it did not happen
the batch number or it did not happen
Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.
chromatogram or it did not happen
PDF metadata is checkable in fifteen seconds
chromatogram or it did not happen
Adding to this: purity is doing more work than the comment implies.
Water content on the document? That affects your concentration math.
Tracking number removed. It identifies both ends of a shipment.
- 1Dead space in the needle hub holds a small but non-trivial volume. On…9 comments in this branch · started by u/andres_restrepo
- 2Sent one vial to Medutest and PeptideMeter. 96.2% and 96.8%. Cost me more…6 comments in this branch · started by u/coa_janitor