Laboratory standards

Every lot, four tests

No lot is listed for sale until an independent analytical laboratory has returned results on all four of the panels below. Testing is paid for by us but performed and reported by the laboratory, and we publish the report as issued.

Sampling

Samples are pulled from sealed finished vials, not from bulk powder, so the report describes what ships. For lots above 500 vials, two vials from different fill positions are tested and the lower result is reported.

When a lot fails

A lot that misses any release limit is rejected and returned to the manufacturer. We do not re-test a failed lot in search of a passing result, and we do not relabel it at a lower nominal content.

Storage and chain of custody

Finished vials are received on dry ice, logged by lot, and held at −20 °C in monitored freezers until the day they ship. Freezer logs are kept for three years and are available on request for any lot number.

Reference standards

Where a certified reference standard exists for a compound, the testing laboratory uses it for identity and content assays. For novel compounds without a commercial standard, identity relies on mass spectrometry and, where available, amino-acid sequencing.

Partner laboratories

We work with ISO/IEC 17025-accredited contract laboratories in the United States. Each report names the laboratory that issued it. We do not operate an in-house lab and never test our own product.