Test Code GBS Cx Culture, Group B Strep
Additional Codes
LAB1377
Methodology
Presumptive and definitive identification of microorganisms by Gram stain and colony morphology growth on selective media and biochemical tests. Includes susceptibilities upon request at an additional charge.
Screening of pregnant females for carriage of group B streptococci by culture at 35 to 37 weeks gestation will help determine which females should receive antibiotics during delivery to help prevent infection of newborn. For maximum recovery of group B streptococci, this test should be collected and ordered separately from other cultures.
Performing Laboratory
Sky Lakes Medical Center-Microbiology
Specimen Requirements
Specimen Type: Vaginal introitus or vaginal/rectum
Container/Tube: Sterile culture swabs in sterile culture transport tubes
Specimen Volume: 2 swabs
Collection Instructions:
1. Specimen source is required.
2. Label tubes with patient’s name (first and last), medical record number or date of birth, specimen source, and date and time of collection.
3. Cervical swab is not acceptable.
Specimen Transport Temperature
Ambient
Reference Values
Negative for group B streptococci
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
87070