Used in biomedical research to measure transketolase (TK) levels in human biological samples such as blood or plasma. This kit helps assess thiamine (vitamin B1) status, as transketolase activity is closely linked to thiamine levels. It is commonly applied in studies related to nutritional deficiencies, metabolic disorders, and neurological conditions where thiamine plays a critical role. The ELISA format allows for sensitive and specific quantification, making it useful in clinical labs and research settings for diagnosing or monitoring diseases like beriberi, Wernicke-Korsakoff syndrome, and diabetes-related complications.