Patent ID: 9733187
Date: 2017-08-15
CPC Classifications: G01N

Claim:
1. A method of detecting bladder cancer in a patient by optical analysis of bodily fluids, comprising the steps of: orally administering to the patient, approximately 5 mg of 5-aminolevulinic acid per kilogram of the body weight of the patient; collecting a bodily fluid sample from the patient; wherein the bodily fluid sample is selected from the group consisting of a urine sample and a blood sample; performing laser-induced fluorescence spectroscopy on the bodily fluid sample to measure a concentration of porphyrin therein, wherein the laser is a blue diode; wherein the laser-induced fluorescence spectroscopy including collimating a laser having a power rating about 100 mW, and a wavelength about 405 nm, through the bodily fluid sample, collecting a dispersed laser exiting the bodily fluid sample via a photodiode array, converting into an electrical signal, and amplifying the electrical signal, converting the amplified electrical signal from an analog signal to a digital signal, processing the digital signal with a digital signal processor, and displaying the concentration of porphyrin detected therein; and diagnosing the patient with bladder cancer if the measured concentration of porphyrin is approximately three times a pre-determined porphyrin concentration for a healthy person of the same age as the patient.