TABLE 4.

Color of colonies on US3 medium in the DipStreak device and on US3 medium plates in study B

OrganismNo. of isolates (total, 810)DipStreak device with US3 mediumUS3 medium plates
No. (%) of isolates with described colorDescription of pigment and/or morphology of coloniesNo. (%) of isolates with described colorDescription of pigment and/or morphology of colonies
Candida spp.1515 (100)White, creamy, convex15 (100)White, creamy, convex
Citrobacter spp.1512 (80)Light green12 (80)Light green
2 (13.3)Light blue2 (13.3)Light blue
1 (6.6)Colorless1 (6.6)Colorless
Escherichia coli420356 (85)Pink to bordeaux390 (92.9)Pink to bordeaux
63 (15)Colorless to beige30 (7.1)Colorless to beige
Enterobacter spp.1212 (100)Light green12 (100)Light green
Enterococcus spp.136129 (97.7)Blue to turquoise, small134 (99.3)Blue to turquoise, small
3 (2.3)Light blue to green1 (0.7)Light blue
Klebsiella spp.7069 (98.6)Light green69 (98.6)Light green
1 (1.4)Blue1 (1.4)Blue
Ochrobactrum anthropi11 (100)Beige1 (100)Colorless
Proteus mirabilis5452 (96.3)Orange to brown with brown halo52 (96.3)Orange to brown with brown halo
2 (3.7)Colorless to beige2 (3.7)Colorless to beige
Proteus, indole positive119 (81.8)Orange to brown with brown halo9 (81.8)Orange to brown with brown halo
2 (18.2)Colorless to beige2 (18.2)Colorless to beige
Pseudomonas spp.4343 (100)Transparent, yellow to green, serrated edge, diffuse43 (100)Transparent, yellow to green, serrated edge, diffuse
Serratia marcescens32 (66.7)Blue-green2 (66.7)Blue-green
1 (33.3)Colorless1 (33.3)Colorless
Staphylococcus aureus77 (100)White to beige7 (100)White to beige
Staphylococcus saprophyticus11 (100)White1 (100)White
Staphylococcus spp.77 (100)White to pink7 (100)White to pink
Streptococcus agalactiae158 (53.3)Light blue, pinpoint8 (53.3)Light blue, pinpoint
6 (40)Blue to violet6 (40)Blue to violet
1 (6.7)Colorless1 (6.7)Colorless