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c/coa·posted 5 months ago by u/soren_nkemelu

stalled for 20 weeks at 1.0mg and I refuse to panic this time

Explainer Slow Clap ×1 Receipts ×3 Clean Column ×2

Posting this because I searched for it and got nothing useful.

Setup: 15mg, week 88, sulphur burps present but not ruining anything. I changed exactly one variable — related substances — and tracked it for 21 weeks.

Result: a difference, but a small one, and well inside what I would call noise if someone else posted it. So I am putting it here rather than presenting it as a finding. If two or three other people have done the same thing we might actually learn something.

Not medical advice, obviously. This is one person with a spreadsheet.

5,087 up / 789 down87% upvoted40 commentsid zfbpei25 Feb 2026

40 comments

15 in this archive, depth 4

best — the order this archive was captured in

u/certified_referenceMOD1k points·5 months ago

Retitled to remove editorialising. Put the evidence in the body.

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u/andres_restrepo828 points·5 months ago

chromatogram or it did not happen

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u/certified_referenceQC794 points·5 months ago·edited

PDF metadata is checkable in fifteen seconds

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u/kavya_verhoeven486 points·5 months ago·edited

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

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u/amara_halonen210 points·5 months ago

Water content matters more than people think. If a vial is carrying residual moisture, your "10mg" is not 10mg of peptide.

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u/dario_boateng-37 points·5 months ago

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

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u/wrong_network_w231 points·5 months ago

purity and net content are two different numbers, same vial

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u/blunt_coldbox2989 points·5 months ago

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

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u/anya_moreau115 points·5 months ago

redact your own name, not the vendor's batch details

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u/soren_nkemeluOP66 points·5 months ago

Asked FGP for the batch-specific COA and they sent it within six hours, full document, batch number, date, everything. That is the baseline.

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u/karma_irrelevant170 points·5 months ago

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

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u/low_appetite_lisa139 points·5 months ago·edited

This is the correct framing.

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

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[deleted]61 points·5 months ago

[deleted]

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u/chidi_demir0 points·5 months ago

axis labels included, always

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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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