How a claim degrades between the bench and the listing
Lot-level verification with a public report is a real and achievable thing. It exists in this market, on a minority of listings.
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A tested vial is evidence about a vial
A result on one vial generalises to a batch only if the vial was drawn in a way that makes it representative — and nobody records how it was drawn.
The badge economy, and what it is actually certifying
What a verification mark would have to carry to be checkable: a date, a lot, a method, a submitter and a link to the report.
An interlaboratory comparison nobody had run
Duplicate submissions under different names test within-laboratory repeatability, which is a different quantity from between-laboratory reproducibility.
How a claim degrades between the bench and the listing
The Journal does not treat a badge as evidence and states so wherever it reports one.
Six words a verification badge would need to mean anything
What a verification mark would have to carry to be checkable: a date, a lot, a method, a submitter and a link to the report.
How a claim degrades between the bench and the listing
What a verification mark would have to carry to be checkable: a date, a lot, a method, a submitter and a link to the report.
A tested vial is evidence about a vial
A result on one vial generalises to a batch only if the vial was drawn in a way that makes it representative — and nobody records how it was drawn.
The badge is about a sample. The listing is about a product.
Lot-level verification with a public report is a real and achievable thing. It exists in this market, on a minority of listings.
What a split-sample exercise can establish, and what it cannot
Two years ago we ran an anonymised version of this comparison and promised a named one. This is it, with every method printed in full.
Blind duplicates: what happens when a laboratory does not know it is being watched
Two years ago we ran an anonymised version of this comparison and promised a named one. This is it, with every method printed in full.
What a laboratory knows about the material it receives
What a laboratory can and cannot know about the provenance, storage history and representativeness of what lands on its bench.
The badge economy, and what it is actually certifying
Every step between the laboratory report and the product page removes information, and the badge is the last step.
Six words a verification badge would need to mean anything
Every step between the laboratory report and the product page removes information, and the badge is the last step.
The named comparison we promised two years ago
The Journal submitted split samples from single lots to three assay services, under names unconnected to this publication, and published each method alongside each result.
Why a result on one vial says less than the trade needs it to
Every third-party report in this market describes a sample somebody chose to send. That choice is outside the laboratory’s control and outside its records.
The badge economy, and what it is actually certifying
Every step between the laboratory report and the product page removes information, and the badge is the last step.
Custody, condition and the temperature nobody logged
Every third-party report in this market describes a sample somebody chose to send. That choice is outside the laboratory’s control and outside its records.
We split six vials four ways and posted them
The Journal submitted split samples from single lots to three assay services, under names unconnected to this publication, and published each method alongside each result.
Why a result on one vial says less than the trade needs it to
Chain of custody, in a regulated setting, begins at sampling. Here it begins when the package arrives.