A creatine kinase isoenzyme latex-enhanced immunoturbidimetric assay kit, comprising a first reagent and a second reagent. The first reagent comprises a buffer solution, an electrolyte, polyethylene glycol, a surfactant, a preservative, a blocking agent, and a protective agent. The second reagent comprises a buffer solution, polystyrene latex particles coated with a creatine kinase isoenzyme antibody, the creatine kinase isoenzyme antibody on the latex particles, a protective agent, a stabilizer, and a preservative.

A creatine kinase isoenzyme latex-enhanced immunoturbidimetric assay kit, comprising a first reagent and a second reagent. The first reagent comprises a buffer solution, an electrolyte, polyethylene glycol, a surfactant, a preservative, a blocking agent, and a protective agent. The second reagent comprises a buffer solution, polystyrene latex particles coated with a creatine kinase isoenzyme antibody, the creatine kinase isoenzyme antibody on the latex particles, a protective agent, a stabilizer, and a preservative.

The present invention provides a method for determining a mortality risk and/or probability of healthy lifespan of a cat; said method comprising determining the level of one or more biomarker(s) in one or more samples obtained from the cat, wherein the one or more biomarker(s) is selected from white blood cell count, haemoglobin, serum urea nitrogen, serum AST, serum chloride, serum total bilirubin, serum globulin, red blood cell count, serum sodium, serum cholesterol, serum potassium, serum alkaline phosphatase, and/or serum GGT.

Devices, kits, and methods for testing and monitoring creatine phosphokinase (CPK) in biological samples are provided.

Devices, kits, and methods for testing and monitoring creatine phosphokinase (CPK) in biological samples are provided.