The Transhydrogenase-1 (TH-1) Activity Assay Kit is primarily used to measure the activity of TH-1 enzymes in biological samples. This kit is essential in research focused on understanding cellular energy metabolism, as TH-1 plays a critical role in maintaining the balance of NADPH and NADH, which are vital for redox reactions and biosynthetic processes. It is widely applied in studies related to mitochondrial function, oxidative stress, and metabolic disorders. Additionally, the kit is utilized in drug discovery and development to screen compounds that modulate TH-1 activity, offering insights into potential therapies for diseases linked to metabolic dysfunction. Its simplicity and accuracy make it a valuable tool for both academic and industrial research.