Table 2.

Recovery of inoculated organisms by antibiotic exposure

Organism and drug	No. of bottles recovering organisms/total no. tested in:
	BacT/Alert PF		Bactec Peds Plus
	Peak concn	Trough concn	Peak concn	Trough concn
S. epidermidis
Vancomycin	0/2	2/2	1/2	2/2
MRSA
Vancomycin	0/2	2/2	2/2	2/2
S. pneumoniae
Vancomycin	0/2	0/2	2/2	2/2
Ceftriaxone	0/2	0/2	0/2	0/2
S. agalactiae
Ampicillin	0/2	0/2	0/2	2/2
Cefotaxime	0/2	0/2	0/2	0/2
E. coli
Cefotaxime	0/2	0/2	0/2	0/2
Cefepime	0/2	0/2	0/2	0/2
P. aeruginosa
Piperacillin-tazobactam	0/2	2/2	2/2	2/2
Cefepime	0/2	0/2	2/2	2/2
Gentamicin	2/2	2/2	2/2	2/2
N. meningitidis
Ceftriaxone	0/2	0/2	0/2	0/2
H. influenzae
Ceftriaxone	0/2	0/2	1/2a	0/2a

^aOne Peds Plus bottle inoculated with H. influenzae and ceftriaxone at peak levels was positive. The quality control plate did not grow any organisms.