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c/coa·submitted 10 months ago by u/first_hundred

does area percent actually matter or is it forum lore at this point

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Posting this because I searched for it and got nothing useful. Setup: 1.0mg, week 69, constipation present but not ruining anything. I changed exactly one variable — area percent — and tracked it for 12 weeks. Result: a difference, but a small one, and well inside what I would call noise if someone else posted it. So…

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6 comments, started 10 months ago
u/bastian_moreau64 points·10 months ago·edited

post the whole document, not the headline number

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[deleted]26 points·10 months ago

[deleted]

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u/emeka_beaulieu20 points·10 months ago·edited

Strongly agree. Mass% and area% are answering different questions on the same document.

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u/valeria_girard10 points·10 months ago

Strongly agree.

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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u/cormac_pereira8 points·10 months ago·edited

This is the correct framing. The COA structure matters as much as the number.

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u/first_hundredOP7 points·10 months ago

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.

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How to read a certificate of analysis and what it does and does not tell you. Area% versus mass%, identity versus quantity, water content, related substances, acetate counterions, and the difference between a vendor-supplied COA and an independent test on the vial you actually received.

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