Libido has a genetic architecture — DRD2 receptor density, OXTR bonding sensitivity, MTNR1B circadian timing, and MC4R central arousal signaling all shape sexual desire at the neurochemical level. The Precision Peptide Genetic Test maps these variables as part of 14 pathways, 49 peptides, and 150+ genetic insights, explaining the biology of desire that testosterone panels miss.

Yes — eNOS genetics directly shapes the nitric oxide foundation that vascular sexual response is built on. NOS3 variants determine how much NO your endothelium produces per arousal signal. The Precision Peptide Genetic Test analyzes eNOS variants as part of 14 pathways, 49 peptides, and 150+ genetic insights, answering the question bloodwork alone cannot.

Yes — genetic testing can guide hormone replacement, but "guide" means something more precise than "predict" or "prescribe." The Precision Peptide Genetic Test maps six Reproductive Health insights across 14 pathways, 49 peptides, and 150+ genetic insights that give providers and patients a defined biological starting point before any hormone support protocol begins.

MTHFR variants affect HRT in three ways: by constraining the SAMe supply that estrogen clearance depends on, by elevating homocysteine as a cardiovascular monitoring variable, and by determining which folate form will actually support your methylation cycle on protocol. The Precision Peptide Genetic Test analyzes MTHFR as part of 14 pathways, 49 peptides, and 150+ genetic insights.

The Precision Peptide Genetic Test analyzes GSTM1 and GSTT1 — the glutathione S-transferase genes whose null deletions eliminate the tertiary Phase 2 backstop against reactive estrogen quinones. Part of 14 pathways, 49 peptides, and 150+ genetic insights, your GSTM1 and GSTT1 deletion status determines whether glutathione conjugation is available when COMT and SULT1A1 clearance is insufficient.

The Precision Peptide Genetic Test analyzes ESR1 and ESR2 — the two estrogen receptor genes that determine how sensitively your tissues respond to circulating estrogen. Part of 14 pathways, 49 peptides, and 150+ genetic insights, your estrogen receptor variants explain why the same estradiol level produces very different biological effects in different women.

The Precision Peptide Genetic Test analyzes MTHFR C677T and A1298C — the variants that set your methylation capacity and determine how efficiently your body produces the SAMe that estrogen clearance depends on. Part of 14 pathways, 49 peptides, and 150+ genetic insights, MTHFR is the upstream genetic variable that connects the methylation cycle to women's hormone balance.

The Precision Peptide Genetic Test analyzes COMT Val158Met — the single variant that most directly determines how quickly your body clears catechol estrogens in Phase 2 metabolism. Part of 14 pathways, 49 peptides, and 150+ genetic insights, your COMT genotype explains why two women with identical estrogen levels can experience hormonal balance very differently.

The Precision Peptide Genetic Test analyzes 6 Reproductive Health insights covering women's hormone pathways — COMT, CYP1A1, CYP1B1, MTHFR, ESR1, and Phase 2 detox genes — within a panel of 14 pathways, 49 peptides, and 150+ genetic insights. This pillar guide breaks down how you produce, clear, and respond to estrogen, and why clearance genetics matter as much as production.

Genetics shapes estrogen in men through four pathways: how much testosterone converts to estradiol (CYP19A1), how efficiently it clears (COMT, MTHFR), how sensitively tissues respond (ESR1), and how much substrate is available (SHBG, SRD5A2). The Precision Peptide Genetic Test maps all these variables across 14 pathways and 150+ genetic insights.

The Precision Peptide Genetic Test analyzes MTHFR C677T and A1298C — the variants that determine your methylation capacity and its downstream effects on estrogen clearance, homocysteine levels, and hormone metabolism. Part of 14 pathways and 150+ genetic insights across 49 peptides, MTHFR is the genetic variable connecting methylation to the male hormone system.

The Precision Peptide Genetic Test analyzes six Reproductive Health genes that directly influence testosterone levels, conversion, and signaling — including SHBG, CYP19A1, AR, SRD5A2, LHCGR, and CYP17A1. Part of 14 pathways and 150+ genetic insights across 49 peptides, these variants explain why testosterone behaves differently in different men.

The Precision Peptide Genetic Test analyzes LH and FSH receptor variants — the genes governing how sensitively your HPTA axis signals testosterone production and sperm health. Part of 14 pathways and 150+ genetic insights across 49 peptides, your HPTA genetics help explain why fertility preservation strategies matter differently for different men on androgen-pathway protocols.

Struggling to build muscle despite consistent training? Genetics may be the missing variable. MSTN, ACTN3, IGF1, GHSR, and VDR variants all influence how your body responds to resistance training stimulus — from hypertrophy ceiling to anabolic signal strength to fiber architecture. The Precision Peptide Genetic Test analyzes 15 Muscle Growth insights across 14 pathways, 49 peptides, and 150+ genetic insights.

The ACE gene’s I/D polymorphism is one of the most replicated findings in sport genetics — separating endurance-optimized physiology (I allele) from power-optimized physiology (D allele) through cardiovascular architecture rather than fiber structure alone. The Precision Peptide Genetic Test analyzes ACE as one of 15 Muscle Growth insights across 14 pathways, 49 peptides, and 150+ genetic insights.

MTHFR converts dietary folate into the active form the methylation cycle requires. The C677T (rs1801133) and A1298C (rs1801131) variants reduce enzyme activity by 30–65%, limiting DNA repair, homocysteine clearance, and epigenetic age regulation. The Precision Peptide Genetic Test analyzes MTHFR as part of 17 Longevity & Aging insights spanning 14 pathways, 49 peptides, and 150+ genetic insights.

APOE comes in three allele variants — e2, e3, and e4 — that produce meaningfully different cardiovascular and cognitive aging trajectories. It is the most studied aging-related gene in human genetics. The Precision Peptide Genetic Test analyzes APOE as part of 17 Longevity & Aging insights within a panel spanning 14 pathways, 49 peptides, and 150+ genetic insights.

FOXO3 is the most replicated longevity gene in science — variants are consistently associated with exceptional lifespan across independent centenarian cohorts in Japan, Italy, and the United States. The Precision Peptide Genetic Test analyzes FOXO3 as part of 17 Longevity & Aging insights within a panel spanning 14 pathways, 49 peptides, and 150+ genetic insights.

SNP, gene, allele, genotype, variant, pathway — six terms that appear in every genetic test report and confuse most first-time readers. The Precision Peptide Genetic Test analyzes 58 SNPs across 49 genes, delivering 14 pathways, 49 peptides, and 150+ genetic insights. This guide defines each term in plain English so your results make sense on first read.

Your Precision Peptide Genetic Test report delivers 150+ insights across 14 pathways, including FOXO3 for longevity, ACTN3 for muscle, and GIPR for weight management. This guide walks through how to read pathway scores, interpret gene variants, and turn findings into the informed conversation every peptide protocol decision should start with.

Genetic peptide testing analyzes how your DNA shapes 14 biological pathways that peptide protocols target — from GLP-1 signaling to growth hormone axis to estrogen clearance. The PlexusDx Precision Peptide Genetic Test delivers 150+ insights across 49 unique peptides, turning peptide decisions from guesswork into evidence-based conversations with your healthcare provider.

The PlexusDx Precision Peptide Genetic Test analyzes 17 longevity-aging genetic insights across five peptide pathways — FOXO4-DRI, Glutathione, Humanin, and Vilon — covering 15 SNPs across 14 genes including FOXO3, TERT, SIRT1, GPX1, and PPARGC1A. This article explains what each insight reveals and why peptide-specific longevity testing is a distinct category of genetic analysis.

The PlexusDx Precision Peptide Genetic Test analyzes 34 weight management genetic insights — covering 8 peptide pathways, 11 SNPs, and 9 genes including FTO, MC4R, PPARG, TCF7L2, and GIPR. This comprehensive guide explains what each insight cluster covers, which peptide pathways are analyzed, and why genetic specificity is the missing variable in most weight management decisions.

The PlexusDx Precision Peptide Genetic Test analyzes 34 weight management genetic insights — including the pathways most relevant to GLP-1 receptor signaling. This article explains what the research shows about genetics and semaglutide response, why MTHFR methylation status matters in the broader metabolic picture, and how genetic testing can help inform a smarter weight management approach.

The PlexusDx Precision Peptide Genetic Test analyzes 34 weight management genetic insights — including GLP-1 receptor signaling and GIPR response pathways. This article explains how genes like FTO, MC4R, and PPARG influence appetite, fat metabolism, and weight regulation, and why your DNA may be the most underused variable in any weight management decision.