Group B Streptococcus Colonization Detection Culture With Reflex to Susceptibilities

Additional Information:

UFHPL Epic Order Code: LAB502


  • Culture, Genital, Group B β-Hemolytic Streptococcus
  • Genital β-Hemolytic Culture, Group B
  • β-Hemolytic Streptococcus Culture, Group B Only, Any Source

CPT Code(s):


Collection Procedure:

Collection: Collection of both a vaginal and rectal swab specimen is strongly recommended. Swab the lower vagina (vaginal introitus), followed by the rectum (ie, insert swab through the anal sphincter) using the same swab. Move swab from side to side, or rotate the swab at the collection site, allowing several seconds for absorption of organisms by the swab. Cervical, perianal, perirectal, or perineal specimens are not acceptable, and a speculum should not be used for culture collection.

Specimen Requirements:

Specimen: Swab of vaginal and rectal specimen

Volume: Single or double bacterial swab in Amies agar gel transport or equivalent

Minimum Volume: Single bacterial swab in Amies agar gel transport or equivalent

Storage Instructions: Maintain specimen at room temperature.

Causes for Rejection: Inappropriate specimen transport; use of ESwab™; inappropriate transport conditions; improper labeling; specimen received after prolonged delay (more than 48 hours); cervical/endocervical, perianal, perirectal or perineal specimen or any source other than vagina and rectum


Isolate and identify group B β-streptococci


Selective broth enrichment culture and aerobic bacterial culture


4-6 days