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Order Code LABGBSMD Group B Streptococcus by Molecular Detection

Important Note

If the patient is allergic to penicillin, please order Group B Strep by Molecular Detection with Sensitivity (LABGBSWS).

Additional Codes

Test Name in EPIC

EPIC Test Code           

Mnemonic

RV Group B Streptococcus by Molecular Detection

 LABGBSMD GBSMD

 

Useful For

Screening for maternal colonization with Streptococcus agalactiae at 36 to 37 weeks gestation as a guide for intrapartum antibiotic prophylaxis to decrease the risk of infection by S agalactiae (group B streptococcus) in the infant.

Specimen Requirements

Collectiuon Instructions:

  1. Swab (red or blue-top Culturette),  lower vagina (vaginal introitus), followed by rectum (insert swab through anal sphincter) using same swab or 2 different swabs. Cervical cultures are not recommended, and a speculum should not be used for collection.
  2. Place swab in culture transport media (red or blue-top Culturette), making sure specimen is in transport media.
  3. Label specimen with patient’s name, date of birth or hospital medical record number, specimen source, date and time of collection, and collector’s initials.
     

    Rejection Criteria:

  • Incorrect swab
  • Unlabeled Specimen

Specimen Stability

Specimen Type Temperature Stability       
Culturette Swab Refrigerated (preferred) 48 hours
  Ambient 24 hours

Reference Values

Negative

Day(s) Test Set Up

Monday through Sunday

Performing Laboratory

Ridgeview Medical Center Laboratory

Test Classification and CPT Coding

87653

Methodology

Real-time Polymerase Chain Reaction (PCR)

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