Frequently Asked Questions
The Xpert GBS LB XC test is an automated qualitative in vitro diagnostic test for the detection of Group B Streptococcus (GBS) DNA from enriched vaginal/rectal swab specimens, using real-time PCR. (1)
Xpert GBS LB XC testing is indicated as an aid in determining the GBS colonization status of antepartum women. The Xpert GBS LB XC test is intended for antepartum testing on enriched Lim broth cultures of vaginal/rectal swabs after 18–24 hours of incubation. (1)
The Xpert GBS LB XC test does not provide antimicrobial susceptibility test results. Culture is necessary to obtain isolates to perform susceptibility testing as recommended for penicillin-allergic women. (1)
Group B Streptococcus (GBS) bacterial infection is associated with rare but serious illness in infants born to women who are colonized with Streptococcus agalactiae. Illness can occur in the first 7 days after birth (early-onset disease) or between a week and a few months after birth (late-onset disease). Infants with GBS infection can present with sepsis, pneumonia, or meningitis. (1)
1. Cepheid. Xpert GBS LB XC Package Insert. Accessed Dec. 18, 2023. https://www.cepheid.com/en-USntent/dam/www-cepheid-com/documents/package-insert-files/Xpert%20GBS%20LB%20XC%20ENGLISH%20Package%20Insert%20302-4580%20Rev%20B.pdf