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.
Church
D L
DL
Division of Microbiology, Calgary Laboratory Services, Calgary Health Region and the University of Calgary, Calgary, Alta. T2L 2K8, Canada. Deirdre.church@cls.ab.ca
Baxter
Heather
H
Lloyd
Tracie
T
Miller
Beverley
B
Elsayed
Sameer
S
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