Your response to growth hormone axis pathways isn’t shaped by a single gene — it’s the product of at least eight interacting genetic factors, from GH release (GHSR) to fiber architecture (ACTN3) to recovery capacity (IL-6). The Precision Peptide Genetic Test analyzes all as part of 15 Muscle Growth insights across 14 pathways, 49 peptides, and 150+ genetic insights.

The GHSR gene encodes the ghrelin receptor — the trigger that initiates growth hormone pulses from the pituitary. GHSR variants shape the amplitude and frequency of GH output upstream of IGF-1 production. The Precision Peptide Genetic Test analyzes GHSR as one of 15 Muscle Growth insights across 14 pathways, 49 peptides, and 150+ genetic insights.

IGF-1 — the primary mediator of growth hormone signaling — converts GH axis activation into muscle growth, tissue repair, and anabolic adaptation. The Precision Peptide Genetic Test analyzes IGF1 variants as part of 15 Muscle Growth insights across 14 pathways, 49 peptides, and 150+ genetic insights — revealing how efficiently your biology converts growth hormone signals into action.