Laboratory Test Information Guide

Details for Streptococcal Group B Screen

Test Name: Streptococcal Group B Screen
Alternate Name(s): Group B Strept Screen
Laboratory: Microbiology (VH)
Specimen Type: Placental, vaginal/rectal swab
Collection Information: This sample type cannot be processed as a STAT request. Samples are handled in a priority sequence and results are reported as they become available.

Placental:
Placental material should be ordered as TISC (tissue culture).

Vaginal/Rectal Swabs:
Collect from the lower vagina and rectum through the anal sphincter. Place the swab in transport media.
Requisition: MICROBIOLOGY REQUISITION
Test Schedule: Daily
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
2 days
Stat
 
 
Reference Range:  
Effective Date: 2006-07-01
Revised Date: 2015-12-14
Critical Value:  
Interpretive Comments: Group B Streptococcus may cause neonatal infections. Screening should be done at 35-37 weeks gestation.
Special Processing:  
Comments:  
Method of Analysis: Culture
Critical Information Required: Please select “vaginal swab, pen allergy” from the source drop down box in penicillin allergic patients.
Storage & Shipment: The specimen must be stored at room temperature.

The specimen must be received within 24 hours of collection.
System Codes: 
Cerner
GBS
 
Referred To:  

Questions? Comments? Contact Laura Gopaul