PeptideChecked

Know what’s in the vial before you buy.
Peptide vendors rated on COAs, lab testing & price.
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[PeptideChecked @PeptideChecked]

A COA is just a document. Documents can be faked.

We check every vendor. Every vial. Every claim.

Know what’s in the vial → https://t.co/Rak5Gri4X3

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peptide regulation in 2026 is a group project where nobody shares the doc. we keep the FDA, HHS and state updates in one place: https://t.co/hLVGT0zrJU

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scroll down

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pepfession: i left a group chat because someone posted a COA with the lot number cropped out

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parent-teacher conference is tuesday

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🚨FDA ALERT: FDA is requiring all approved GLP-1 drug labels to add a warning about a potential increased risk of NAION, a rare eye condition that can cause vision loss. Drug Safety Communication dated Nov 9 https://t.co/zhhfu1kMhb

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your COA says "TFA salt" and you nodded like you knew what that meant. we wrote the explainer, no judgment: https://t.co/Vel2wtA4IO

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it's a small club

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"tested in a US lab" is not a lab name. which lab. which state. which planet

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delays expected

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"statistically significant" doesn't mean big, important or proven in people. it means the result probably wasn't chance in that one study's setup. check how large the effect was and what it was measured in

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a testing lab that only exists inside vendor pdfs is just a font

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per serving

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pepfession: a lab's report lookup page is the first thing in my bookmarks bar. my bank is fourth

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your weekly reading

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a review paper isn't a new study. it's researchers summarizing studies that already exist, usually with zero new data. when a "new peptide paper" goes viral, check which one it is first

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not every lab name on a COA is a lab you can actually look up. we keep notes on the testing labs that show up most on peptide COAs: https://t.co/L9BAyNdNHb

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the algorithm knows

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pepfession: i've rejected a COA because the font changed halfway down the page

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stuck at 99% since tuesday

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HPLC and mass spec answer different questions. HPLC: how much of the sample is one compound. mass spec: whether that compound is the one on the label. a COA with only one of them answered half the question