IGF‑1 axis, myostatin, and GH secretagogues in experimental contexts. Supplier considerations included.
Hypertrophy and recovery signals: IGF-1 axis, myostatin binding, GH secretagogues.
Training volume, recovery status, and nutrition variables can swamp small effects. Keep logs consistent.
Prioritize chromatograms and impurity profiles; check vial lot vs COA.
Use primary sources to verify claims; interpret within each study’s limits.