Table 2.

Frequency of positive or negative findings from blood cultures or SeptiFast polymerase chain reaction analyses of blood samples from cystic fibrosis patients experiencing episodes of febrile infective exacerbation

	BC+	BC-	total	Contaminant
SF+	2	6	8	2 (SF+ and BC-)
SF-	3	61	64
total	5	67	72
Contaminant	2 (BC+ and SF-)

BC+, probe testing positive by blood culture

BC-, probe testing negative by blood culture

SF+, probe testing positive by SeptiFast polymerase chain reaction analysis

SF-, probe testing negative by SeptiFast polymerase chain reaction analysis Contaminant, probe considered to be a contaminant