Patent ID: 8265878

Claim:
A system, comprising: a) a nucleic acid amplification component; b) a base composition determination component comprising a processor wherein said base composition identifies the number of, but not the nucleic acid gene sequence order of, A residues, C residues, T residues, G residues, U residues, analogs thereof and/or mass tag residues thereof; and c) a base composition identification component comprising a processor and a database of base compositions from a plurality of bioagents wherein said base compositions identify the number of, but not the nucleic acid gene sequence order of, A residues, C residues, T residues, G residues, U residues, analogs thereof and/or mass tag residues thereof; said database comprising a plurality of calculated or measured base compositions of amplification products of bioagents obtained by amplification of at least one target sequence of a bioagent nucleic acid gene sequence using a primer pair that hybridizes to the at least one target sequence region of a plurality of bioagents said target sequence region comprising two conserved regions that are hybridizable with the primer pair and that flank a variable region that uniquely varies between a plurality of bioagents.