The NAD Kinase (NADK) Activity Assay Kit is primarily used to measure the enzymatic activity of NADK, which plays a critical role in cellular metabolism. It is widely applied in research focused on understanding cellular energy regulation, redox balance, and signaling pathways. This kit is particularly useful in studying the impact of NADK on NADP+ biosynthesis, which is essential for antioxidant defense and biosynthetic processes. Researchers utilize it to investigate metabolic disorders, cancer metabolism, and the effects of potential therapeutic compounds targeting NADK. The assay is also employed in drug discovery and development to screen for inhibitors or activators of NADK, providing insights into novel treatment strategies for diseases linked to metabolic dysregulation.