Lack of requirement for prolonged incubation of Septi-Chek blood culture bottles in patients with bacteremia due to fastidious bacteria.

A questionnaire survey for which there were 538 respondents from American clinical microbiology laboratories was used to assess the need for prolonged incubation of Septi-Chek blood culture bottles for the recovery of HACEK bacilli, Brucella species, Francisella tularensis, and nutritionally deficient streptococci from blood. Among a total of 219 reported isolates of these bacteria, in only 6 cases (2.7%) was incubation longer than 7 days required.