TABLE 5.

Summary of outcomes of discordant organism result investigations

Result and analyte	No. of results	No. of investigationsa
		Comparator result confirmed	FilmArray result confirmed	Both results incorrectb	Inconclusive
BCID FP results
Enterococcus	4		1		3
Staphylococcus	12		11		1
S. aureus	4	0	1		3
Streptococcus	5	1	1		3
S. pneumoniae	2		1		1
S. pyogenes	1	1
A. baumannii	5	5
Enterobacteriaceae	4		1		3
E. cloacae complex	3			1	2
E. coli	5	1	2		2
K. pneumoniae	9	4		3	2
K. oxytoca	1				1
S. marcescens	1			1
P. aeruginosa	1				1
C. albicans	4				4
C. glabrata	2				2
C. parapsilosis	2				2
Total	65	12	18	5	30
% of total FP results		18	28	8	46
BCID FN results
Enterococcus	3	3
Staphylococcus	28	20	1		7
S. aureus	4	1	2		1
Streptococcus	5	3			2
S. pneumoniae	1		1
Enterobacteriaceae	8	4	3		1
E. cloacae complex	1	1
E. coli	3		3
K. pneumoniae	3	1		1	1
K. oxytoca	5	1	4
S. marcescens	1		1
P. aeruginosa	1		1
C. parapsilosis	2		2
Total	65	34	18	1	12
% of total FN results		52	28	2	18

^aThe method used was investigation of possible sample mix-ups, reculturing from frozen aliquots of the blood culture bottle fluid, sequencing directly from the bottle if isolated organisms were expected, or sequencing from resubcultured isolated organisms if more than one isolate per bottle was present. For bacterial resolution, 16S rRNA gene sequences were analyzed and for yeast, ITS1 was analyzed. See Materials and Methods for further information. Three apparent blood culture bottle mix-ups and one apparent bottle selection error were resolved in favor of BCID.

^bSee Results for further information regarding the indicated organism.