Group B Streptococci BY PCR

The Group B Streptococci BY PCR test is a molecular assay that detects Streptococcus agalactiae (Group B Streptococcus, GBS) DNA from vaginal and rectal swab samples. By amplifying specific bacterial genetic targets, PCR delivers faster and often more sensitive detection than traditional culture methods, enabling timely clinical decisions during pregnancy and labour. Accurate identification of maternal GBS carriage is critical because colonisation can increase the risk of early-onset neonatal infection if not managed appropriately.

This test is routinely used in antenatal care—typically recommended between 35 and 37 weeks’ gestation—or earlier when risk factors are present, such as preterm labour, prolonged rupture of membranes, intrapartum fever, or a history of an infant with GBS disease. Results guide clinicians on the need for intrapartum antibiotic prophylaxis to reduce transmission to the newborn; Touch Connect offers convenient at-home sample collection across Dubai to support expectant mothers. Inform your provider about recent antibiotic use or vaginal procedures, as these can affect test accuracy and interpretation.

• GBS DNA (qualitative PCR)
• Detection status: Detected / Not detected
• Cycle threshold (Ct) value (if reported)
• Specimen type recorded: Vaginal and rectal swab

• Routine antenatal screening at 35–37 weeks of pregnancy
• Preterm labour or when delivery is imminent before routine screening
• Prolonged rupture of membranes (>18 hours)
• Maternal fever or signs of infection during labour
• History of previous newborn affected by GBS disease

• Rapid and highly sensitive detection of GBS colonisation
• Supports evidence-based decision for intrapartum antibiotics
• Convenient at-home sample collection across Dubai
• Reduces neonatal risk of early-onset GBS disease when followed by appropriate care
• Clear, actionable results to inform obstetric management

• Vaginal and rectal swabs collected by a trained professional (home visit available)
• No fasting required
• Avoid vaginal douches, intercourse, or intravaginal medications 24–48 hours before sampling
• Provide pregnancy details, recent antibiotic use, and any prior GBS history