Diagnostic kits comprised of medical diagnostic reagents, assays, and nasopharyngeal and pharyngeal swabs for medical use for the testing of bodily fluids for use in disease detection, namely, a polymerase chain reaction (PCR) testing kit for the detection of SARS-COV-2; medical diagnostic kits comprised primarily of diagnostic preparations for medical diagnostic uses, namely, for the preparation of samples, the modification and manipulation of samples and for making, separating, isolating, purifying, reproducing and analyzing biopolymers, namely, nucleic acids, proteins, macromolecules and biologically active substances in the nature of nucleic acids from biological or biochemical sample material