The appearance of TOOS is a white crystalline powder with high water solubility, stable performance, and has become a commonly used color reagent in in vitro diagnostic reagents. At the same time, TOOS is stable in the fading of color products and is not easy to fade. It is very sensitive in terms of absorption wavelength and color reaction intensity. Moreover, due to its high molar absorbance, it can sometimes be used for some very small amounts of determination in serum. Items that TOOS can detect TOOS is commonly used in blood glucose testing and routine liver function tests. In routine liver function tests, it can form adenosine deaminase detection reagents with BSA, EDTA disodium, etc., which have obvious color rendering effects, sensitive and rapid reactions, and accurate measurements. In addition, TOOS plays a crucial role in the determination of human plasma, serum or uric acid concentrations using catalase spectrophotometry, as well as in the diagnostic reagents for triglycerides and cholesterol detection items, providing great convenience for clinical diagnosis. Precautions for using TOOS TOOS itself has reducibility. Although enzymes play a catalytic role in the detection process, it is relatively limited. If it is prepared into a solution without enzymes and comes into contact with oxygen in the air, it will be interfered with and oxidized and discolored. Usually, it is necessary to pay attention to sealing and storage, and not directly expose it to the air. If it is necessary to prepare the powder into a solution, try to use as much as possible. The TOOS developed and produced by Desheng Biochemical is a powder, with a purity of 99.5% and strong water solubility. It is easy to store and ready to use, which not only saves time but also benefits the accuracy of experimental results.