u/janoshik_junkie

Not going to talk you out of it. That claim-versus-measured agreement is the strongest signal available and yours is tight in both directions.

The thing I would say: agreement matters more than the absolute number. A vendor claiming 99.0 and delivering 98.9 is telling you something about their process. A vendor claiming 99.5 and delivering 98.6 is telling you something about their marketing department.

yes, and it is on the source page under what to ask for. warehouse is faster, the pair above is within a tenth, and one pair is not a finding either.

"either way" is the correct commitment and most people do not make it. good.

separately: reta purity results are more variable between labs than sema or tirz in my log. edit: 98.9, 98.1, 97.9, 97.6 across four vendors, which is a wider band than i see on the older compounds.

he tested two of six and posted both. that is a higher testing rate than about 95% of this community manages. what would satisfy you exactly

"ask me again at six" is the right amount of confidence and i should have written that instead of the last line.

worth noting the service did its job perfectly here. the number was correct, the interpretation was the hard part, and that is almost always the case.

this is the confound i cannot rule out from here and you have named it better than i did. the batch number is a label, not a chain of custody.

adding a chain-of-custody line to the c/labresults template. arrival date, storage, reconstituted or not, punctures. four fields.

this matches what i found on a different compound in 2025 — raw material 0.7 higher than a reseller vial of the same nominal batch. edit: same delta, different compound, which is either a coincidence or a pattern and two points cannot tell you which.

Four for me, and specifically four across at least a year, because I want to see whether the process drifts.

The BCH record is the example that set my number. Twelve documents in the audit, all complete, results clustered — that is a process. Compare that with a vendor whose six results run 98.4, 97.9, 96.2, 94.8, 98.1, 93.7. The mean of that second set is not a useful number about anything. It is two vendors wearing one name.

That criterion is from the previous plan year. The current bulletin has different wording.

Three of those six are mine and I will state the general version: I would rather have a table like this one than an average of 98.5 built from a 99.4 and a 94.8 somewhere else.

The reason is that you are not buying the average, you are buying one vial. Variance is the thing that hurts you and the mean is the thing that gets quoted.

External review, which is the most underused mechanism discussed on this board.

Agreed — and request the bulletin by number. They have to give it to you.

Prior authorisation criteria are republished each plan year. A criterion that blocked you in one year may not exist in the next, so a denial is worth retesting after the turnover.

The thing that decided it for me was that SWB answered a column-and-gradient question in writing without asking why I wanted to know.

Tracking number redacted from the post above. It identifies both ends of a shipment.

the trend across lots is worth more than any single figure

Left up and added to the vendor source page log. Thanks for paying for it and posting it.

Removed pending evidence. Name a supplier here and you bring a document, a date or a service — that is the sidebar rule and it is not negotiable.

write down when it starts and stops, the pattern is the useful part

Regional stock made more difference to my planning than anything else — ordering from a warehouse in Germany took the customs question off the table entirely.

Removed pending evidence. Name a supplier here and you bring a document, a date or a service — that is the sidebar rule and it is not negotiable.

the trend across lots is worth more than any single figure

Correction: that supplier is in the documented twenty with a source page, not in the wider-market table. Different evidence bases entirely.

the first fortnight after a step is the worst of it, then it settles

Flair set to Vendor. Also a reminder that we take no money from any supplier in the directory.

Removed pending evidence. Name a supplier here and you bring a document, a date or a service — that is the sidebar rule and it is not negotiable.

what does the certificate actually carry — that is the whole question

Correcting myself: I quoted net peptide content against somebody else’s area percent. Not a comparison.

post the claim next to the result or the number floats

Held the dose for an extra six weeks instead of stepping. The early fullness settled and I lost the same amount anyway.

Did you ask for the batch-specific certificate, or the generic one?

Same view. A record you can read beats a rating you cannot inspect, every time.