Medutest result on a Wuhan orforglipron lot lands 3.1 points above the supplier’s stated figure

Medutest has released a batch of 11 analytical reports on research-grade orforglipron lots, including material from QSC and Homopeptide. Reported purities range across roughly 3.1 percentage points, and the report set is unusual in stating the analytical method for every determination rather than for some of them.

Reported figures across the set were: highest 99.0%, lowest 95.8%, median close to the midpoint of the two. Every report in the set stated a detection wavelength, and 11 of them stated an integration threshold. The Journal has asked the laboratory to publish thresholds on all reports as a matter of routine.

Reported figures across the set were: highest 99.0%, lowest 95.8%, median close to the midpoint of the two. Every report in the set stated a detection wavelength, and 11 of them stated an integration threshold. The Journal has asked the laboratory to publish thresholds on all reports as a matter of routine.

Purity became this trade’s single figure of merit because it is the cheapest measurement to obtain and the easiest to compare. Peptide content, which determines how much drug is actually in a vial, costs several times as much and is quoted as a priced addition by most of the twenty companies in the Journal’s dossier programme rather than carried as a standard release test. Sterility and endotoxin are separate disciplines again, and are neither tested nor claimed.

"The useful thing in that report is not the percentage, it is the system suitability data," said Dr Sirichai Boonmee, peptide chemist, Chulalongkorn University. "It is the only part that tells you whether the percentage means anything."

QSC’s dossier has been updated with this determination and with the company’s response to it. The dossier’s ordering box records the lead times, the minimum quantities and what a buyer should ask for at the point of order.