A diagnostic method suitable for detection and quantification of blood-related diseases or conditions. The methods utilize biomarkers, such as hemoglobin and hemozoin as catalysts in an atom transfer radical polymerization (ATRP) reaction performed above a lower critical solution temperature (LCST) of a polymer which allows the polymerization to be tracked by rate of turbidity formation. The rate of turbidity formation is correlated to the concentration of the biomarker, making the tests useful quantitative techniques which can be utilized as point-of-care tests in the field.

Lyophilized chromophoric polymer dot compositions are provided. Also disclosed are methods of making and using the lyophilized compositions, methods of dispersing the lyophilized compositions in aqueous solutions and kits supplying the compositions.

Lyophilized chromophoric polymer dot compositions are provided. Also disclosed are methods of making and using the lyophilized compositions, methods of dispersing the lyophilized compositions in aqueous solutions and kits supplying the compositions.

The compositions described herein include a substrate, wherein the substrate is a metal, metal oxide, metal nitride or a silicon containing material; a self-assembled monolayer (SAM) bonded to the substrate, wherein the self-assembled monolayer comprises: a surface binding unit bonded to the substrate, wherein the surface binding unit is selected from the group consisting of hydroxamates, phosphonates, catechols, halosilanes, alkoxysilanes, phosphonic acids, alkenes, alkynes, alcohols, 1,2-diols, and thiols; a separator unit bonded to the surface binding unit; a mass altering unit bonded to the separator unit; and a detector unit bonded to the separator unit.

An assay kit for use in detecting an anti-polyvinyl alcohol antibody (anti-PVAL), comprises: polyvinyl alcohol (PVAL) attached to a support material; and an indicator reagent comprising a binding member that is specific for a human antibody; wherein the binding member is conjugated to a detectable label, and the binding member is capable of forming a complex with an anti-PVAL antibody. The kit can be used in a method for detecting antipolyvinyl alcohol (anti-PVAL) antibodies in test samples, such as serum, which comprises combining a test sample (e.g., serum) with the PVAL-bound support material to form a binary complex of the PVAL with an anti-PVAL antibody in the sample, followed by reacting the indicator reagent with the binary complex to form a labeled ternary complex, and then detecting the presence or absence of the ternary complex.

Methods of covalently attaching heparin to a membrane comprising plasma treating the membrane to produce an amino-functionalized membrane; and reacting the amino-functionalized membrane with heparin under conditions in which heparin becomes covalently attached to the amino-functionalized membrane, wherein said heparin is indirectly attached via a spacer to said amino-functionalized membrane and/or said heparin is attached from a single site in said heparin to a single site on said amino-functionalized membrane or to said spacer. Also disclosed are analyte sensors.

An assay method for detecting antipolyvinyl alcohol (anti-PVAL) antibodies in test samples, such as serum, is described. The method comprises combining a sample to be tested for an anti-PVAL antibody with polyvinyl alcohol (PVAL) to form a binary complex of the PVAL with an anti-PVAL antibody in the sample, followed by reacting an indicator reagent with the binary complex to form a labeled ternary complex, and then detecting the presence or absence of the ternary complex in the sample. Kits for performing the test are also described.

The present invention relates to improved detection assays via the utilisation of a substrate with an analyte immobilised on its surface by means of a linking agent and a cross-linker. The present invention also relates to a method of producing a substrate for use in detection assays and a method of detecting an analyte using said substrate.

A diagnostic method suitable for detection and quantification of blood-related diseases or conditions. The methods utilize biomarkers, such as hemoglobin and hemozoin as catalysts in an atom transfer radical polymerization (ATRP) reaction performed above a lower critical solution temperature (LCST) of a polymer which allows the polymerization to be tracked by rate of turbidity formation. The rate of turbidity formation is correlated to the concentration of the biomarker, making the tests useful quantitative techniques which can be utilized as point-of-care tests in the field.

A method for detecting a substance in a subject includes providing a polymer responsive to a change in property when exposed to the substance and a material that binds the substance to -9-tetrahydrocannabinol (THC) or cannabis; contacting the polymer with a fluid or a breath from a subject; and detecting a presence of the substance in the subject by detecting a change in polymer property and comparing the change to predetermined values for THC or cannabis.