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c/coa·submitted 17 days ago by u/teodor_lokken

[Explainer] the four things a COA must have or it is decorative

Explainerbranch of 5 comments

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, muscle cramps, 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 12 months. My…

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5 comments, started 16 days ago
u/camila_lindqvist57 points·16 days ago

No. This is the kind of confident post that gets copied into a screenshot and repeated for years. Where is the evidence.

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u/first_hundred47 points·15 days ago·edited

area% is not mass%, and here is exactly why it matters

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u/anecdata_annie17 points·15 days ago

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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u/step_therapy_s20 points·15 days ago

the batch number or it did not happen

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u/first_hundred10 points·15 days ago

Water content on the document? That affects your concentration math.

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About c/coa

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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