ThreeFold Sensors develops biosensor assays and biosensor instrumentation for research and environmental applications where rapid results are desirable. ThreeFold Sensors' BioSensors can be used in research settings to measure concentrations or to perform kinetic assay measurements of analytes in water, blood and urine. ThreeFold Sensors' BioSensors measurements can be made in 3-10 minutes with accuracies comparable to laboratory assays methods taking 4-24 hours. For researchers interested in developing biosensor assays or measuring the binding and dissociation rates of molecular interactions, ThreeFold Sensors provides development kits which allow researchers to sensitize their own fibers and assemble sensor cartridges for use with ThreeFold Sensors' BioSensor measurement systems. This platform is well suited to drug discovery research based upon molecular interaction analysis using receptor proteins.