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Group B Streptococcus by PCR (8000100188)
Test Mnemonic:

C GB
Specimen Requirements:
Collection:

Collect swab specimen from both vaginal introtius and anorectum. 
Container:

Culturette swabs without charcoal or Eswab
Minimum Volume:

One Swab
Storage/Transport:

Room temperature; refrigerate if transport is delayed.
Stability:

Room temperature up to 24 hours. Refrigerate (2-8°C) up to 48 hours.
Causes for Rejection:

Improper collection, swabs received outside stability requirements, unlabeled specimen container or labeled incorrectly, no date and time of collection on the requisition form. 
Methodology:

Real-time PCR
Performed:

Clinical Microbiology
Turnaround Time:

Batch testing is performed daily. Swabs are placed in a broth and must incubate overnight before test is performed.
Reference Range:

Negative
CPT 4 Code:

87653
Note:

Please note if patient is allergic to Penicillin on the request form. If stated and the test is positive, additional antibiotic susceptibility tests will be performed.
Synonyms:

pre-natal screen for Group B Streptococcus, GBS screen
Patient Preparation :

Using a swab in a non-nutritive collection media, without charcoal, swab the a vaginal/rectal region.
Clinical Indication:

Screening test for the presence of Group B Streptococcus (Streptococcus agalactiae) in pregnant women prior to delivery.
Effective Date: 01/09/2024
Reviewed By/Date: 0 - 01/01/1900
Approved By/Date: Williams-Bouyer, Natalie - 09/13/2024
When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.

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