JenPlateau said: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:…
Adding a me-too, because a thread of one person's experience is not much use. The detail I would add is minor and it is already implied above.
anders_CPH said:My vendor review relevant to certificates of analysis: ordered 6 times from my current compounder.
Vendor quality matters when discussing certificates of analysis. I've tested my last 5 batches through Janoshik and purity has ranged from 98.0% to 99.2%. Consistency is key.
For anyone new: always request the COA, and consider independent verification. The $300 for a Janoshik test is worth the peace of mind.
One thing that is still open after anders_CPH’s answer:
Did your prescriber agree with that reading, and if not what was their objection?
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Shop Reference StandardsDr.RaviCardio said:Vendor quality matters when discussing certificates of analysis.
Community-verified vendors for certificates of analysis: I maintain a spreadsheet of Janoshik-verified test results submitted by community members. Across 46 submitted tests:
- 82% tested at ≥98% purity
- 12% tested at 95-98% purity
- 6% tested at <95% purity (concerning)
The vendors with consistently high purity results are listed in the Vendor Directory. We update monthly based on new community submissions.
Moderator note: reminder that nothing in this thread is medical advice, and that clinical claims need a source. No action needed from anybody.