Evaluation of the Oxoid Dryspot Streptococcal Grouping Kit for Grouping Beta-Hemolytic Streptococci

DOI: 10.1128/JCM.37.1.255-257.1999

Article Figures & Data

Table 1.

Performance of the streptococcal grouping reagents used in this study^a

Lancefield group or species	Oxoid Dryspot				Oxoid liquid latex^b		Streptex
	Card format		Stick format		Enzyme extract	Nitrous acid extract	Enzyme extract	Nitrous acid extract
	Enzyme extract	Nitrous acid extract	Enzyme extract	Nitrous acid extract	Enzyme extract	Nitrous acid extract	Enzyme extract	Nitrous acid extract
A	59/59	59/59	42/42	42/42	85/85	85/85	85/85	85/85
B	54/54	54/54	47/47	47/47	87/87	87/87	87/87	87/87
C	25/25	25/25	25/25	25/25	30/30	30/30	30/30	30/30
D^c	28/28	NT^d	25/25	NT	38/38	NT	38/38	NT
F	19/19	19/19	16/16	16/16	23/23	23/23	23/23	23/23
G	40/40	40/40	42/42	42/42	65/65	65/65	65/65	65/65
L	1/0^e	1/NR^f	1/0^e	1/NR	1/0^e	1/NR	1/0^e	1/NR
Listeria monocytogenes	4/NR	4/NR	4/NR	4/NR	4/NR	4/NR	4/NR	4/NR

↵a The data are the number of isolates tested followed by the number giving the correct reaction.
↵b Cumulative total of individual strains tested in both sections of the study; the strains tested in both sections were only counted once.
↵c Includes three strains with both D and G antigens.
↵d NT, not tested.
↵e Strain reacted with group A latex.
↵f NR, no reaction with any of the latex suspensions used.