Evaluation of StrepB carrot broth versus Lim broth for detection of group B Streptococcus colonization status of near-term pregnant women.
The performance of StrepB Carrot Broth (SCB) versus group B Lim broth (LIM) for detection of group B streptococcus (GBS) colonization status in near-term pregnant women (35 to 37 weeks of gestation) was evaluated. Dually collected vaginal/rectal swabs from 279 women enrolled from a single large maternity clinic were analyzed. Fifty (18%) women were colonized by GBS according to both methods. SCB had excellent diagnostic performance compared to LIM, with sensitivity, specificity, positive predictive value, and negative predictive value of 92%, 100%, 100%, and 98.3%, respectively. Improved diagnostic efficiency due to direct reporting of GBS cases based on an orange color change in the SCB decreased overall labor and material costs.
Division of Microbiology, Calgary Laboratory Services, Calgary Health Region and the University of Calgary, Calgary, Alta. T2L 2K8, Canada. Deirdre.church@cls.ab.ca
D L
DL
Church
Heather
H
Baxter
Tracie
T
Lloyd
Beverley
B
Miller
Sameer
S
Elsayed
D000328:Adult; D001431:Bacteriological Techniques / Q000379:methods*; D002353:Carrier State / Q000382:microbiology*; D003470:Culture Media; D005260:Female; D006801:Humans; D011237:Predictive Value of Tests; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000382:microbiology*; D037841:Pregnant People; D012007:Rectum / Q000382:microbiology; D012680:Sensitivity and Specificity; D013292:Streptococcus agalactiae / Q000302:isolation & purification*; D014621:Vagina / Q000382:microbiology
D003470:Culture Media