Clinician reviewing men's hormone genetic testing with a male patient — PlexusDx Precision Peptide Genetic Test

Complete Guide to Genetic Men's Hormone Testing: 6 Pathway Insights

The Precision Peptide Genetic Test analyzes 6 Reproductive Health insights covering men's hormone pathways — SHBG, CYP19A1, AR, SRD5A2, and LH/FSH receptor variants — within a panel of 14 pathways, 49 peptides, and 150+ genetic insights. This pillar guide breaks down each gene, what it reveals about testosterone response, and why DNA is the most underused variable in hormone protocols.

Man reviewing SHBG genetics and free testosterone variability — PlexusDx Precision Peptide Genetic Test

SHBG Genetics: Why Your Free Testosterone Varies

SHBG — sex hormone-binding globulin — determines how much of your testosterone is biologically available to cells. High SHBG binds more testosterone, reducing free levels; low SHBG releases more. SHBG gene variants shape your baseline level genetically. The Precision Peptide Genetic Test analyzes SHBG as part of Men’s Hormone insights across 14 pathways, 49 peptides, and 150+ genetic insights.