The HPLC/UV method was developed, optimized and validated for the analysis of caffeine and its selected metabolites (1-methyluric acid, theobromine, paraxanthine, theophylline) in urine. The method is also used for the quantification of caffeine in various food samples.
Tramadol is a centrally acting opioid analgesic belonging to the pharmacotherapeutic group of opioid analgesic. Tramadol is sometimes used in combination with Paracetamol to treat moderate to severe pain suffered by patients with various types of pain. This application has been developed to monitor right drug dosing.