Test Overview
Test Methodology

Culture

Test Usage

Detect maternal colonization with Beta Streptococcus Group B.

Reference Range *

Negative

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Specimen will be screened only for presence of Beta Streptococcus Group B.

Test Details
Days Set Up
Daily
Analytic Time

Negative results are reported within 48 hours.

Soft Order Code
GBS
MiChart Code
Strep B Screen, Vaginal / Rectal
Synonyms
  • Streptococcus agalactiae Culture, Vaginal / Rectal
  • BSSN
  • Group B Streptococci Culture, Perinatal
  • Beta Strep Group B Culture, Vaginal / Rectal
  • Streptococcus agalactiae
  • Culture, Beta Streptococcus Group B
  • BETA STREPTOCOCCUS GRP B CULTURE
  • GBS
  • BETA STREPTOCOCCUS GP B CULT
Laboratory
Microbiology
Section
Microbiology
Specimen Requirements
Collection Instructions

Swab lower vagina and anorectum and place in aerobic transport tube. Refrigerate and send within 48 hours of collection.

Rejection Criteria
Specimen received more than 48 hours old.
Normal Volume
1 swab
Minimum Volume
1 swab
Storage Temperature
Ambient or Refrigerated: Up to 48 hours
Frozen: No
Additional Information

CDC recommendations suggest that GBS screening cultures are appropriate
for clinical use for 5 weeks from the time the culture was obtained.

Rapid direct culture using chromogenic media has demonstrated equivalent sensitivity and specificity when compared to PCR testing. Test includes susceptibility testing of potentially pathogenic organism(s) at an additional charge (DFEE) (cpt 87184) unless specifically declined.

Billing
CPT Code
87081
Fee Code
20212
Reflex CPT
87184
Reflex Fee Code
20210 DFEE
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