S-adenosyl homocysteine ​​method based on small molecule capture technology (SMT). After homocysteine ​​is converted to the free form, it reacts with covalent substrates to amplify the cycle and produce adenosine at the same time. Adenosine is immediately hydrolyzed into ammonia and hypoxanthine. Under the action of glutamate dehydrogenase, ammonia is converted from BETA-nicotinamide adenine dinucleotide reduced form (NADH) to NAD. The acid concentration is proportional to the change in NADH. Hair Brush,Curl Sponge,Round Hair Brush,Curling Brush Ningbo DSS Intelligent Technology Co., Ltd , https://www.dssking.com