For research use only · Not for human or veterinary consumption

VNG Labs · Lot reports

What else is in the vial?

Every lot is sent to an outside accredited laboratory before it goes on sale. These are the results — all of them, unedited, including the numbers that aren't flattering.

Five things a purity number doesn't tell you

"99% pure" is one measurement. It says nothing about the other five. Here is what gets checked, in plain words.

Heavy metals · ICP-MS

Lead. Mercury. Arsenic.

Plus cadmium and chromium. Five metals, screened on every lot. A purity test does not look for any of them.

Sterility · USP <71>

Live bacteria

Is anything growing in it? The lot is cultured. The result you want to see is "no growth detected."

Bacterial endotoxin · LAL

Dead bacteria

What bacteria leave behind after they die. It survives sterilisation — so a vial can be sterile and still carry it. Measured in EU/mg. Lower is better.

Purity · HPLC

How much is the actual compound

The number everyone prints. Worth having — just not on its own, and not without a report behind it.

Net content · assay

How much is actually in there

Labelled amount versus assayed amount. A vial can be 99% pure and still hold less than the label says.

Who signed it

A lab with a name

Every report here is issued by Vanguard Laboratory, ISO/IEC 17025 accredited, A2LA cert #6377.01.01. "Third-party tested" with no name on it is not a test result.

Every lot on the shelf

Fifteen lots currently listed. Each one has a certificate behind it, tied to the lot number printed on the vial.

Now go ask your vendor for theirs.

There is a lot number printed on the vial you already own. Email whoever sold it to you and ask for that lot's report.

Watch what comes back.

See the catalogue at vnglabs.com

Opens vnglabs.com — the store this record belongs to.