A Laser Detection for Bladder Cancer by (Photodynamic) Spectra of Urine

The bladder cancer patients is required to swallow a chemical called Amino levulinic Acid, about 10mg/kg body weight. 5ml of blood and one urine samples will be taken before using Amino levulinic Acid. The patient must drink water then the urine will be collected after 4, 8 and 12 hours of taking ALA and the samples will be analyzed by photodynamic diagnostic procedure. ALA gets metabolized into certain types of porphyrins which selectively bind on to the tumor tissues (for a longer time than the normal tissues).