Chemical preparations, reagents, and assays for scientific, research, and laboratory use; Reagents used to collect, stabilize, transport and prepare analytes, namely, nucleic acids, proteins, and metabolites, from biological samples, sourced from blood, saliva, tissue, skin, feces, sputum, urine, and other bodily fluids; chemical compositions and reagents for urine and urine-related analysis; chemical preservatives for urine; Kits comprising a preserving solution, specially designed collectio...