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Group B Strep PCR
MessageNOTE: CDC Recommendations:
Collection of cultures between 35 and 37 weeks gestation is recommended to improve the sensitivity and specificity of detection of women who remain colonized at the time of delivery. Swabbing both the lower vagina and rectum (i.e., through the anal sphincter) increases the yield substantially compared with sampling the cervix or sampling the vagina without also swabbing the rectum.
Collection of cultures between 35 and 37 weeks gestation is recommended to improve the sensitivity and specificity of detection of women who remain colonized at the time of delivery. Swabbing both the lower vagina and rectum (i.e., through the anal sphincter) increases the yield substantially compared with sampling the cervix or sampling the vagina without also swabbing the rectum.
Test Code
GRPBPCR - WyMC
Alias/See Also
Genital Screen by PCR method for Group B Streptococcus, GBS-NAAT
Preferred Specimen
Specimen collected on Copan red top swab from combined vaginal introitus and anorectal areas.
Specimen Stability
Room Temperature: 24 Hours
Refrigerated: 6 Days
Refrigerated: 6 Days
Methodology
Cepheid GeneXpert
Setup Schedule
Daily
Report Available
Tested daily after 18-24hr incubation. Turnaround time is 48 hours.
Clinical Significance
Qualitative detection of Group B Strep to screen and determine GBS colonization status of pregnant women at 35 to 37 weeks of gestation.
