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Laboratory Test Directory

Culture- Bacterial, Group B Strep Screen


Name Method Department Units
Culture, Group B Strep Screen Standard microbiologic culture media and techniques
CMI, Microbiology

Specimen Requirements

Vaginal swab, Rectal swab

Container Type Container Size Specimen Volume

Dual culture swab system


Room temperature - 24 hour(s)
Refrigerated - 24 hour(s)

Specimen Preparation

  • Transport to laboratory as soon as possible

Reasons for Rejection

  • Wrong type of specimen
  • Not received within specified time frame


Specimen screened for the presence of Group B Strep only. Used for pre-natal screening for group B strep colonization of vaginal and rectal sites; not for diagnosis or treatment of an infectious process. Use one swab for vaginal and one swab for rectal; submit as one specimen.

CPT Code

  • 87081