TABLE 2.

Comparison of the Staphychrom II test with an LAT (Slidex Staph Plus) and a conventional TCT with 293 clinical isolates

Species	No. of strains	No. of strains with the indicated result by:
		Staphychrom II test		Slidex Staph Plus LAT		Conventional TCT
		+	−	+	−	+	−
S. aureus	215	211	4a	212	3b	210	5c
Non-S. aureus staphylococci	78	0	78	1d	77	1e	77
Total	293	211	82	213	80	211	82

^aThese four strains (three MRSA strains and one methicillin-sensitive S. aureus strain) yielded a positive result by the Slidex Staph Plus LAT and three yielded a negative result by the conventional TCT.

^bThese three strains (one MRSA strain and two methicillin-sensitive S. aureus strains) yielded a positive result by the Staphychrom II test and the conventional TCT.

^cAmong these five strains, two yielded a positive result by both the Staphychrom II test and the Slidex Staph Plus LAT. The other three (see footnote a) yielded a negative result by the Staphychrom II test and a positive result by the Slidex Staph Plus LAT.

^dThis false-positive reaction corresponded to S. hominis.

^eThis false-positive reaction corresponded to S. simulans.