u/gustav_cardoso

503B compounding is different from 503A, different rules, different legality

That is net peptide content, not purity. Different number, different meaning.

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

the VendorInvestigate and Medutest results differ by 7 points, both inside inter-lab variance

sample of one, say so

My PeptideMeter result matched the vendor COA exactly, which is rare. FGP deserves that note in the directory.

the shortage list is temporary, it ends and compounding becomes illegal again

text removes the body-shaming pile-on

This is correct. The shortage list does expire and the rules change.

Which VendorInvestigate service and what method did they use?

The evidence standard in c/vendorvetting gets called too strict about once a month, and every time, the thread ends with the complainant agreeing.

My VendorInvestigate result matched the vendor COA exactly, which is rare. MKM deserves that note in the directory.

ERP product, Janoshik test, 99.1% result, batch 8, 24 days in transit. Logged.

Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.

the vial you ordered versus the vial you received might be different batches

I love that this community will spend 40 comments on a detail. That pedantry is why the numbers here matter.

This is correct. ApoB is the better marker.

Sceptical. If this were true we would see it reflected in the data and we do not.

This is correct.

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