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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Streptococcus, Group B, PCR

Test Code(s): GBS / HCGBS

CPT Code(s): 87653

Methodology: PCR

Turnaround Time: Stat: Not available stat.
Routine: Up to 7 days.

Specimen Requirements

Specimen: Vaginal/rectal swab

Collection Instructions: Wipe away excess secretions or discharge from the vaginal area prior to sampling.

Collection Container: Preferred: CultureSwab®

Specimen Transport: Transport specimen to UWHC Microbiology Laboratory (B4/231).

Stability: Ambient: 24 hours
Refrigerated: Up to 6 days
Frozen: Not acceptable


Expected Results:


Additional Information:

A positive test result may represent the presence of nonviable organisms.


Susceptibility testing performed on penicillin allergic patients.


This test was performed using a modification of an FDA approved method.  The performance characteristics of this test were determined by the UWHC Clinical Laboratories and meet the standards for clinical testing.

Streptococcus agalactiae Beta Strep Group B

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