3-Indoxyl Sulfate Potassium Salt is widely used in biochemical research, particularly in studies related to gut microbiota and its impact on human health. It serves as a key biomarker for assessing kidney function and metabolic processes, as it is a metabolite derived from the breakdown of tryptophan by intestinal bacteria. Researchers utilize it to investigate the relationship between gut dysbiosis and chronic kidney disease, as elevated levels of this compound are often linked to renal impairment. Additionally, it is employed in toxicology studies to understand the effects of uremic toxins on various organ systems. Its role in oxidative stress and inflammation research is also significant, making it a valuable compound for exploring therapeutic interventions in metabolic and renal disorders.