Glutathione synthesis, recycling, and detoxification capacity are all genetically variable — GCLC, GCLM, GSR, GPX1, GSTM1, and NFE2L2 each shape a different step. The Precision Peptide Genetic Test maps these variants across 14 pathways, 49 peptides, and 150+ genetic insights, revealing where your antioxidant production is genetically strongest and where it leaks.