Growth Factor Axis.

The GH axis, instrumented end to end. On the GHRH-receptor side: sermorelin (the short-lived classical reference), tesamorelin (enzyme-stabilized) and CJC-1295 (albumin-bound, days-long). On the ghrelin-receptor side: ipamorelin, the selective secretagogue. And downstream, IGF-1 LR3 enters the cascade at its final signalling step. Duration and receptor become experimental variables you choose off the shelf.

All five are batch-verified by an independent US lab, with published purity and a certificate of analysis in every order.