CPT® Code 83570

The CPT® Code 83570 refers to a laboratory test that measures the level of isocitric dehydrogenase (IDH), an important enzyme involved in cellular metabolism. Isocitric dehydrogenase plays a critical role in the citric acid cycle, a key metabolic pathway that generates energy through the oxidative decarboxylation of isocitrate, resulting in the formation of alpha-ketoglutarate and carbon dioxide (CO2). This enzymatic reaction is essential for the conversion of NAD(P)+ to NAD(P)H, which is vital for various cellular processes. The activity of IDH occurs in multiple cellular compartments, including the cytosol, mitochondria, and peroxisomes, highlighting its significance in diverse metabolic functions. The enzyme is not only crucial for energy production but also for lipid synthesis, oxygen sensing, signal transduction, and providing cellular defense against oxidative stress. Furthermore, mutations in the IDH gene have been linked to certain human cancers, such as gliomas and acute myeloid leukemia, underscoring the clinical relevance of measuring IDH levels in diagnostic and therapeutic contexts.