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HelpTest Code MSTRB Culture, Streptococcus Group B screen
Laboratory Code
LAB3040206
Specimen Requirements
Specimen Type: High vaginal swab (HVS)
Container/Tube: eSwab, M40 transystem Amies agar transport media (for non-NUH patients)
Volume: 1 swab
Collection Instructions: Collect specimen at 35 to 37 weeks’ gestation.
Swab the distal vagina (vaginal introitus).
Please refer to eSwab Training Slides.
Specimen Stability
| Specimen Type | HVS |
|---|---|
| Ambient | Submit sample to lab immediately |
| Refrigerate | NA |
| Frozen | Unacceptable |
Methodology
Conventional Culture
Days and Times Performed
Monday through Sunday, TAT 2 - 4 days
Reference Interval
Streptococcus agalactiae (Group B) not isolated.
Testing Laboratory
National University Hospital
Clinical Microbiology, 67724343
Useful For
Prenatal screening of pregnant women at 35 -37 weeks of gestation is recommended to reduce Perinatal Group B Streptococcal disease.
Service Code
23085
LOINC Code Information
72607-5
Update
Last updated 19/3/2025
Unacceptable Condition
Frozen sample, dry swab.
Special Instruction
Do not share sample with other requests.