The present invention provides a detection device comprises a testing element and a transparent area, wherein the testing element comprises a detection area which is configured to detect a presence of an analyte in a liquid sample; the transparent area is configured to read the test result on the detection area through the transparent area; a part of the transparent area contacts a part of the detection area, or the detection area and the transparent area are arranged in one sealed space, thus to make the air in the sealed space not exchange with the air outside the sealed space; the scheme can reduce the mist to ensure the test result is displayed clearly.

The subject invention provides materials and methods for single-step detection of target molecules in a sample. The methods and assays of the subject invention employ a dye-displacement strategy, in which aptamers complexed with a cyanine dye for sensitive and rapid detection of targets of interest. In the presence of a target, aptamer-target binding liberates the non-covalently bound aptamer-binding dye, resulting in optical changes that can be observed spectrophotometrically or with the naked eye. The methods and assays of the subject invention enable the colorimetric detection of targets of interest regardless of their structure, sequence, target-binding affinity, and physicochemical properties of their targets.

A method for quantification of the concentration of one or more cannabinoid compounds in a liquid sample is provided. The method involves contacting the liquid sample with at least one cannabinoid-sensitive visualization reagent, allowing the at least one cannabinoid-sensitive visualization reagent to develop for a defined amount of time; and comparing the resulting color change of the at least one cannabinoid-sensitive visualization reagent to a calibrated quantification reference chart.

The present disclosure relates to an oral cavity based device, system and toolkit which identifies the human or animal through the unique demarcations oral cavity. These unique demarcations are described as “oralsprint” identifiers (IDs) used to both identify and measure saliva-based biologics and other biometrics through one or more electronic sensors and related technologies for humans and animals to herein as ORAL AND SALIVA BASED EQUINE ID DRUG MONITORING.

The present disclosure relates to an oral cavity based device, system and toolkit which identifies the human or animal through the unique demarcations oral cavity. These unique demarcations are described as “oralsprint” identifiers (IDs) used to both identify and measure saliva-based biologics and other biometrics through one or more electronic sensors and related technologies for humans and animals to herein as ORAL AND SALIVA BASED EQUINE ID DRUG MONITORING.

The present invention relates to an optical sensing element for detection of a narcotic, the optical sensing element comprising a fluorescent sensing compound provided on a substrate, wherein emission of the fluorescent sensing compound is quenched in the presence of the narcotic, and wherein the fluorescent sensing compound is non-polymeric and comprises an electron donor moiety, an electron acceptor moiety and a moiety that influences solubility of the compound in a solvent. Sensing devices incorporating the sensing element and methods of detecting narcotics are also described.

A test strip includes a substantially transparent substrate and one or more colorimetric test spots on the transparent substrate. Each colorimetric test spot has one or more sensing chemicals chemically attached onto a porous support material. The porous support material has at least one exposed surface configured to absorb a body fluid. The one or more sensing chemicals are configured to change a color in response to a presence of a target drug in the body fluid.

A test strip includes a substantially transparent substrate and one or more colorimetric test spots on the transparent substrate. Each colorimetric test spot has one or more sensing chemicals chemically attached onto a porous support material. The porous support material has at least one exposed surface configured to absorb a body fluid. The one or more sensing chemicals are configured to change a color in response to a presence of a target drug in the body fluid.

A reagent for extracting immunosuppressant drugs from a whole blood sample for immunoassay includes protein denaturant, proteolytic enzyme, surfactant and pH buffer. A method and an immunoassay kit for detection of the immunosuppressant concentration in a whole blood sample uses the extraction reagent. The extraction reagent doesn't need the use of organic solvent as that in the traditional extraction methods, therefore the adverse effects of the organic solvent on the antibody activity in a detection system and the other relative defects associated to its use are obviated. The drug extraction process doesn't need centrifugation, as the processed sample can be directly applied for immunoassay. The operation for drug extraction is simple, and the detection result based on this extraction method is accurate.

A method for analyzing or detecting methimazole (“MTZ”) comprising contacting a sample suspected of containing MTZ with the dendrimer-stabilized silver nanoparticles and performing surface-enhanced Raman scattering (SERS). Graphene-dendrimer-stabilized silver nanoparticles (G-D-Ag).