A narrower follow-up, since the general answer is now clear:
Did your prescriber agree with that reading, and if not what was their objection?
rachel_ABQ said:Third-party testing services for certificates of analysis besides Janoshik: Janoshik: Gold standard for peptide community, ~$136, 10-14 day turnaround…
My HPLC chromatogram analysis for certificates of analysis — I sent my batch to Janoshik and here's what the results showed:
Main peak retention time: 15.6 minutes (consistent with semaglutide reference standard)
Peak purity: 99.4%
Related substances: 0.8% (single impurity at 9.3 minutes — likely a synthesis intermediate)
Mass spec: m/z 4113.6 (matches expected molecular weight)
This is a clean result. The mass spec confirmation is particularly important — it proves the molecule is actually semaglutide and not a substitution.
rachel_ABQ said:Third-party testing services for certificates of analysis besides Janoshik: Janoshik: Gold standard for peptide community, ~$136, 10-14 day turnaround…
That is right, and it stops being right at the edges. The general case is well behaved; the interesting cases in this thread are all at the boundary where the general case breaks.
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View Resultsrachel_ABQ said:Third-party testing services for certificates of analysis besides Janoshik: Janoshik: Gold standard for peptide community, ~$136, 10-14 day turnaround…
That reframing is the part I needed. I will report back once I have actually tried it.
Clinical perspective, offered as context rather than as advice. Take it one variable at a time. Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent argument can untangle them after the fact.