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Streptococcus Group B with Susceptibility Culture [15090X]
Test Code14537
CPT Codes
87081
Includes
If culture is positive, identification will be performed at an additional charge, (CPT code(s): 87077 or 87140 or 87143 or 87147 or 87149).
Antibiotic susceptibilities will be performed on Group B streptococcus isolates (CPT code(s): 87181 or 87184 or 87186).
Antibiotic susceptibilities will be performed on Group B streptococcus isolates (CPT code(s): 87181 or 87184 or 87186).
Preferred Specimen
Vaginal-rectal swab submitted in Amies liquid transport swab, Amies gel transport swab, Amies liquid elution swab (ESwab) or equivalent
Instructions
For prenatal cultures, obtain specimens from both the vaginal introitus and anorectum utilizing one or two swabs. Cervical cultures are not acceptable for prenatal screening; a speculum should not be used. After culture collection place swab(s) into one bacterial transport medium.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 48 hours
Refrigerated: 48 hours
Frozen: Unacceptable
Refrigerated: 48 hours
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Non-vaginal/rectal specimens • Viral transport medium • Molecular transport system
Methodology
Bacterial Culture, Aerobic Isolation and Identification Procedure including Broth Enhanced Culture and Susceptibility
Setup Schedule
Set up: Daily; Report available: 4 days
Reference Range
See Laboratory Report
Clinical Significance
Group B streptococci can be one of the most significant pathogens in the neonatal period. The organism is transmitted to the newborn through the birth canal. Prepartum vaginal introitus and anorectal cultures are important to determine carriage.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153