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Group B Strep Screen Culture
MessageTesting performed at York Hospital Laboratory.
If positive, an identification and sensitivity will be performed at an additional charge.
If positive, an identification and sensitivity will be performed at an additional charge.
Test Code
CSGBS
Alias/See Also
Strep B Culture
CPT Codes
87081
Preferred Specimen
Vaginal and rectal swab
Please specify specimen source.
Please specify specimen source.
Instructions
The lower vaginal and rectum (through the anal sphincter) should be swabbed with 2 different swabs. This will increase the recovery of Group B Strep substantially, compared with sampling the cervix or vaginal without also swabbing the rectum.
Transport Container
Swab (Rayon or Dacron) in Transport Media
Transport Temperature
Room Temperature
Specimen Stability
Room temperature: 24 hours
Refrigerated: Not recommended
Frozen: Unacceptable
Refrigerated: Not recommended
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Cotton or alginate swabs, wooden shafted swabs.
Transport media tips containing agar, gelatin, or charcoal
Transport media tips containing agar, gelatin, or charcoal
Methodology
Culture
Setup Schedule
Daily
Report Available
Negative Culture - Finalized at 2 days
Clinical Significance
Group B Strep (S. agalactiae) is the leading infectious cause of morbidity and mortality among newborns. Young infants with invasive Group B Strep (GBS) disease usually present with sepsis or pneumonia, and less often contract meningitis, osteomyelitis, or septic arthritis.
A Group B Strep screen is essential to the managmeent of the high risk mother during pregnancy, and the neonate at term, offering a means of monitoring, and hopefully preventing disease. Culture screening of both the vagina and rectum for GBS late in gestation during prenatal care can detect women who are likely to be colonized with GBS at the time of delivery and are thus at higher risk of perinatal transmission of the organism.
A Group B Strep screen is essential to the managmeent of the high risk mother during pregnancy, and the neonate at term, offering a means of monitoring, and hopefully preventing disease. Culture screening of both the vagina and rectum for GBS late in gestation during prenatal care can detect women who are likely to be colonized with GBS at the time of delivery and are thus at higher risk of perinatal transmission of the organism.
