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Test Code SBSC Strep B Screen Culture

Methodology

Enriched Culture in selective broth followed by PCR to detect Group B Streptococcus

Specimen Type

vaginal/rectal swab

Preferred Collection Container

E-SWAB

Collection Volume

1 swab (vaginal/rectal)

Minimum Collection Volume

1 swab

Collection Instructions

A combination lower vaginal and rectal specimen is required. Use swab to first collect vaginal specimen (without use of a speculum) followed by rectal specimen.

Rejection Criteria

Single source specimen; Improperly labeled specimens; Dry swabs; Specimens collected >48 hours.

Specimen Storage and Stability

<48 hours at Room Temperature

Turn Around Time

Cultures with no growth will be reported at 2 days. Reports on specimens from which pathogens are isolated will take a minimum of 2 days for completion.

Lab Department

Microbiology

Alias

Strep B Screen Culture; Culture for Streptococcus Group B, Genital; Beta-Hemolytic Strep Group B Culture, Genital; Genital Strep Screen Culture;

EPIC Code

LAB1377

Acceptable Collection Container

Eswab—White or Blue (Mini-tip) Cap

Additional Information

The standard of care for preventing Group B Streptococcus (GBS) disease is screening pregnant women at 35-37 weeks of gestation to determine their GBS colonization status. Susceptibility testing of GBS is only performed upon notification to the laboratory that the patient is penicillin allergic.

Day(s) and Time(s) Performed

6:00am – 12:30am