The Xtra Amp tube, Isocode paper, Instagene matrix, and PrepMan matrix meth
ods were evaluated for their ability to rapidly extract PCR-quality DNAs fr
om Escherichia coli O157:H7 and Cryptosporidium parvum. All ability methods
provided satisfactory DNA from E. coli, and the Xtra Amp and Instagene rea
gents provided satisfactory DNA from C. parvum.