GSS Gene Glutathione synthetase deficiency NGS Genetic Test Cost 20000 INR in India Glutathione is the body's primary internal antioxidant, made using the amino acid cysteine, and it helps protect cells from oxidative stress. Beyond detoxification, research shows glutathione is involved in thyroid hormone metabolism, The Determination of Blood Glutathione by Amperometric Titration Journal of Clinical Pathology Frontiers Mathematical Modeling of Glutathione Status in Type 2 Diabetics with Vitamin B12 Deficiency Colorimetric detection of glutathione in human blood serum based on the reduction of oxidized TMB New Journal of Chemistry (RSC Publishing)