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 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 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.

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.

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.

Is a genetic methylation test worth it? Here's what the science says, what your results actually reveal, and how to decide if it's right for your health goals.

Genetic methylation test pricing ranges from $99 for a basic MTHFR variant check to $298 for a comprehensive 300+ insight panel. Here's how to compare what you actually get at each price point.

MTHFR test costs range from $49 for a basic clinical variant check to $298 for a comprehensive at-home panel. Here's how LabCorp, insurance, and DTC options compare in 2026.

Your MTHFR variants, pathway function, and personalized next steps — explained. Plus how to read blood test results for homocysteine, folate, and B12.