Probabilistic Identification of Bacteria: Gram Positive Aerobic Cocci

Identify an unknown bacterial isolate by selecting the checkboxes for known test results, and clicking on the submit button. Leave boxes blank for unknown or indeterminate test results.

Test Value
White-cream colony Positive
Negative
Yellow-orange colony Positive
Negative
Pink-red colony Positive
Negative
Catalase Positive
Negative
Oxidase Positive
Negative
Coagulase Positive
Negative
Phosphatase Positive
Negative
DNAase Positive
Negative
ONPG Positive
Negative
Arginine dihydrolase Positive
Negative
Lysine decarboxylase Positive
Negative
Ornithine decarboxylase Positive
Negative
Citrate Positive
Negative
Hydrogen sulphide Positive
Negative
Urease Positive
Negative
Tryptophan deaminase Positive
Negative
Indole Positive
Negative
Voges-Proskauer Positive
Negative
Glycerol/Erythromycin Positive
Negative
Nitrate reduction Positive
Negative
Glycerol Positive
Negative
Erythritol Positive
Negative
D(-)Arabinose Positive
Negative
L(+)Arabinose Positive
Negative
Ribose Positive
Negative
D(+)Xylose Positive
Negative
L(-)Xylose Positive
Negative
Adonitol Positive
Negative
Methyl xyloside Positive
Negative
Galactose Positive
Negative
D(+)Glucose Positive
Negative
D(+)Fructose Positive
Negative
D(+)Mannose Positive
Negative
L(-)Sorbose Positive
Negative
Rhamnose Positive
Negative
Dulcitol Positive
Negative
Inositol Positive
Negative
Mannitol Positive
Negative
Sorbitol Positive
Negative
Methyl mannoside Positive
Negative
Methyl glucoside Positive
Negative
Acetylglucosamine Positive
Negative
Amygdalin Positive
Negative
Arbutin Positive
Negative
Aesculin Positive
Negative
Salicin Positive
Negative
D(+)Cellobiose Positive
Negative
Maltose Positive
Negative
Lactose Positive
Negative
D(+)Melibiose Positive
Negative
Sucrose Positive
Negative
Trehalose Positive
Negative
Inulin Positive
Negative
D(+)Melezitose Positive
Negative
D(+)Raffinose Positive
Negative
Dextrin Positive
Negative
Amylose Positive
Negative
Starch Positive
Negative
Glycogen Positive
Negative
Gelatin liquefaction Positive
Negative

Identification Results Table:

Enter test result data into checkboxes to proceed with identification

The following tests gave unexpected results for the most likely taxa:

No atypical results found



References:

Bryant, T.N. (2004) PIBWin -- software for probabilistic identification. Journal of Applied Microbiology 97(6):1326-7.

Feltham, R.K.A. and Sneath, P.H.A. (1982) Construction of matrices for computer-assisted identification of aerobic Gram-positive cocci. Journal of General Microbiology 128, 713-120