SDMA (Symmetric dimethylarginine)是一氧化氮 (NO) 合酶活性的内源性抑制剂。SDMA 是一种新的肾脏生物标志物，可以比传统的肌酐检测更早地诊断肾脏疾病。 SDMA (Symmetric dimethylarginine) is an endogenous inhibitor of nitric oxide (NO) synthase activity. SDMA, a novel kidney biomarker, permits earlier diagnosis of kidney disease than traditional creatinine testing. Information SMDA (symmetric dimethylarginine) is a methylated form of arginine found within all nucleated cells that is released into circulation after proteolysis, then excreted through the kidneys, and correlates well with GFR (glomerular filtration rate) in people, dogs, and cats.