Patent ID: 9557268
Date: 2017-01-31
CPC Classifications: G01N

Claim:
1. A portable instrument for detecting an analyte on a specimen, comprising: a housing which is substantially impervious to light, a cassette which carries the specimen and is removably inserted into the housing, a light source within the housing for directing light toward the specimen to induce fluorescent emission from analyte on the specimen, a detector within the housing responsive to fluorescent emissions having a spectral content characteristic of the analyte to be detected and providing data corresponding to the mass of analyte detected per unit area on the specimen, means for processing data from the detector by multiplying the volume per unit area of the specimen by the density of the specimen to determine the mass per unit area of the specimen and dividing the mass per unit area of the analyte detected on the specimen by the mass per unit area of the specimen to determine the mass ratio or concentration of the analyte and specimen, and a display which is responsive to the processed data and visible externally of the housing for displaying information about the analyte on the specimen.