Abstract: A diagnostic test kit for detecting hydrogen peroxide released by enzyme-catalyzed oxidation of an analyte within a test sample is provided. The test kit comprises a lateral flow device that contains a chromatographic medium, wherein the chromatographic medium defines a detection zone within which a chromogen is substantially non-diffusively immobilized in conjunction with an anionic compound. The chromogen is a leuco base, or a derivative thereof, which is capable of undergoing a detectable color change upon oxidation.

Abstract: A diagnostic method and associated test kit for detecting an analyte residing in a test sample is provided. A sample membrane is utilized having a collection region and a detection region, the collection region having a known saturation volume for the intended test sample. A barrier is defined between the collection region and the detection region. The collection region is saturated with the test sample having a volume of less than about 100 microliters so that a known volume of the test sample is contained in the collection region. The barrier is removed from between the collection region and detection region of the membrane and a diluent is supplied to the collection region of the membrane to facilitate flow of the test sample from the collection region to the detection region of the membrane.

Abstract: Nonwoven webs, such as coform webs, treated with a bacteriostatic composition are generally disclosed. The treated webs can attract and/or trap negatively charged matter, such as bacteria and other pathogens. The bacteriostatic composition can comprise a cationic polymer, a cationic oligomer, or particles coated with a cationic material. The bacteriostatic composition can be bonded to the fibers of the nonwoven web in a manner such that the bacteriostatic composition is not substantially transferable to the web's surrounding environment.

Abstract: An assay for detecting, measuring, or monitoring the activity or concentration of at least two proteins that have similar or overlapping properties is disclosed. The assay comprises first determining the sensitivity coefficients of the substrates for each of the proteins in which the concentrations are to be determined. This method may be used for detecting, measuring, or monitoring the activity and concentration of AChE, BChE, or both in a test sample which test sample may be whole and unprocessed blood or tissue. Also disclosed are methods of using the assay to detect a subject's exposure to an agent which affects cholinesterase, determine the efficacy or progress of a treatment, determine the amount of protection provided against exposure to an agent which affects cholinesterase, or both, screen a subject for having a drug sensitivity or a particular disease, detect a change in red blood cell count of a subject, determine whether a candidate compound affects cholinesterase.

Abstract: An assay for detecting, measuring, or monitoring the activity or concentration of at least two proteins that have similar or overlapping properties is disclosed. The assay comprises first determining the sensitivity coefficients of the substrates for each of the proteins in which the concentrations are to be determined. This method may be used for detecting, measuring, or monitoring the activity and concentration of AChE, BChE, or both in a test sample which test sample may be whole and unprocessed blood or tissue. Also disclosed are methods of using the assay to detect a subject's exposure to an agent which affects cholinesterase, determine the efficacy or progress of a treatment, determine the amount of protection provided against exposure to an agent which affects cholinesterase, or both, screen a subject for having a drug sensitivity or a particular disease, detect a change in red blood cell count of a subject, determine whether a candidate compound affects cholinesterase.

Abstract: A material comprising a porous support and a plurality of enzymes for the removal, decontamination or neutralization of hazardous chemicals such as OP compounds is disclosed. The material may be used on a variety of surfaces, including natural, synthetic and biological surfaces such as skin and other delicate membranes. Also disclosed is a process of making the material, kits and various methods and reactivation devices for reactivating the enzymatic activity of the material.

Abstract: An enzymatically active reusable sponge or foam, capable of regeneration with oximes, made of a polymer such as polyurethane is prepared for detoxification of hazardous compounds such as organophosphorus and organosulfur compounds. The foam or sponge contains a plurality of enzymes including enzymes selected from acetylcholinesterase, butyrylcholinesterase, triesterase, pseudocholinesterase, organophosphate hydrase, phosphotriesterase, paraoxonase and organophosphorus and organosulfur hydrolyzing enzymes. The sponge or foam may additionally contain activated carbon and an enzyme reactivation compound. A kit can be formed containing the sponge or foam and the compound for enzyme reactivation. The enzymatically active foam or sponge may be prepared using a two chamber device where enzymes and prepolymer are passed from separate chambers into a static mixing stator and are subjected to low shear mixing and extrusion to form by the sponge or foam.

Abstract: A material comprising a porous support and a plurality of enzymes for the removal, decontamination or neutralization of hazardous chemicals such as OP compounds is disclosed. The material may be used on a variety of surfaces, including natural, synthetic and biological surfaces such as skin and other delicate membranes. Also disclosed is a process of making the material, kits and various methods and reactivation devices for reactivating the enzymatic activity of the material.

Abstract: An assay for detecting, measuring, or monitoring the activity or concentration of at least two proteins that have similar or overlapping properties is disclosed. The assay comprises first determining the sensitivity coefficients of the substrates for each of the proteins in which the concentrations are to be determined. This method may be used for detecting, measuring, or monitoring the activity and concentration of AChE, BChE, or both in a test sample which test sample may be whole and unprocessed blood or tissue. Also disclosed are methods of using the assay to detect a subject's exposure to an agent which affects cholinesterase, determine the efficacy or progress of a treatment, determine the amount of protection provided against exposure to an agent which affects cholinesterase, or both, screen a subject for having a drug sensitivity or a particular disease, detect a change in red blood cell count of a subject, determine whether a candidate compound affects cholinesterase.

Abstract: Methods, compositions and materials useful in the detection of organophosphorous and organosulfur compounds are disclosed. In particular, biosensors wherein a porous or a non-porous support having an enzyme immobilized upon or within are disclosed. The biosensors exhibit enzymatic stability at extreme temperatures and/or denaturing conditions, and similar kinetic characteristics of the soluble form of the enzymes utilized. The enzyme does not leach from the porous or non-porous support and the material retains enzymatic activity after prolonged storage. Differential biosensors are also disclosed.