Sorbitol Dehydrogenase (SDH) is an enzyme that catalyzes the interconversion of sorbitol and fructose. Elevated blood serum SDH levels indicate liver damage; thus, SDH plays an important role in the diagnosis of liver disease, especially in combination with aminotransferases. SDH levels are also measured to evaluate diabetic complications such as proliferative diabetic retinopathy. The non-radioactive, colorimetric SDH assay is based on the reduction of the tetrazolium salt MTT in a NADH-coupled enzymatic reaction to a reduced form of MTT which exhibits an absorption maximum at 565nm. The increase in absorbance at 565nm is directly proportional to the enzyme activity.
Intended Use:For quantitative determination of Sorbitol Dehydrogenase enzyme activity.
Applications:SDH activity determination in biological samples (e.g. plasma, serum, urine, tissue and culture media.)
Storage and Stability:Store powder at 4°C liquid at -20°C. Store other components at 4°C. Stable for 6 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
