Janoshik Analytical

Janoshik contributes just under half of all reports in the index and is the reference laboratory for the index's inter-lab bias estimates. That choice is pragmatic rather than a quality judgement: with the largest number of paired comparisons available, using Janoshik as the zero point produces the tightest confidence intervals on the other five labs' offsets. It does not mean Janoshik is correct in an absolute sense, and the index says so wherever a bias figure appears.

Methodologically, Janoshik runs a 30-minute reverse-phase gradient that is close enough to the index reference method RG-2 that no gradient-length correction is applied to its results. Identity is confirmed by high-resolution ESI-TOF, which means the 1 Da bremelanotide/melanotan II distinction and the 14 Da hexarelin/GHRP-6 distinction are both within its capability — a claim only three of the six labs here can make.

Two limitations recur in the index's Janoshik record set. Endotoxin and sterility are offered but ordered on a minority of submissions, so those columns are sparse. And where a submitter orders purity alone, the resulting record cannot support an identity claim, which is why 18 % of Janoshik-sourced records in the index carry the status "purity only — identity not established".