Number of colony forming units in urine at 35-37 weeks' gestation as predictor of the vaginal load of Group B Streptococci at birth

Even though the urinary GBS CFU at 35-37 weeks' gestation is strongly associated with a high load of vaginal GBS colonization intrapartum, it may not perform satisfactorily as a standalone-screening marker for risk of early-onset GBS disease.