Group B Strep DNA Amplification Assay

Message

Results from the illumigene GBS assay can be used as an aid in establishing the GBS colonization status of antepartum women.

Test Code

LAB1369

Alias/See Also

_{Rapid Strep B, Group B Rapid Beta Strep}

CPT Codes
87653

Preferred Specimen

Vaginal/rectal swabs taken from antepartum women.

Instructions

Vaginal and rectal sample collection should be performed in accordance with published guidelines for collection of clinical specimens for culture of Group B Streptococcus. Vaginal and rectal specimens may be collected using the same swab or two different swabs.
Place swab(s) in a non-nutritive transport medium (eg, Stuart’s or Amies without charcoal) and transported to the laboratory. In the event that two different swabs are used for sample collection, a single transport device may be used.

Transport Container

Place swab(s) in a non-nutritive transport medium (eg, Stuart’s or Amies without charcoal) and transported to the laboratory. In the event that two different swabs are used for sample collection, a single transport device may be used.

Transport Temperature

Room Temperature

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Cervical, perianal, perirectal or perineal specimens are not acceptable sample types. A speculum should not be used for sample collection.

Methodology
The illumigene Group B Streptococcus (GBS) molecular assay is based on loop-mediated amplification technology, which uses specifically designed primers to Streptococcus agalactiae to provide for specific and continuous isothermal DNA amplification.

Report Available

72 hours
STAT 24 hours

Limitations

This assay does not diagnose or monitor treatment for GBS infections. RSTBM test does not provide susceptibility results. Culture isolates are needed for performing susceptibility testing as recommended for penicillin-allergic women.

Performing Laboratory
CH CHOMP HOSPITAL LAB (831-625-4811): CH MICROBIOLOGY

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.