| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Culture, Group B Strep-Prenatal Screen
MessageNOTE: American College of Obstetricians and Gynecologists Committee Recommendations (2019): The ACOG recommends performing universal GBS screening between the 36th and 37th weeks of gestation. 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
C GSTR
Alias/See Also
Group B Strep Screen (Pregnancy) Genital Screen by culture method for Group B Streptococcus
CPT Codes
87081
Preferred Specimen
Specimen collected on eSwab from combined vaginal introitus and anorectal areas.
Instructions
Describe site, such as vaginal, rectal, perianal
NOTE: For eSwabs, may collect two swabs and submit as one culture. Use a separate eSwab and container for each of the two sources. Send both eSwabs together as one culture.
NOTE: For eSwabs, may collect two swabs and submit as one culture. Use a separate eSwab and container for each of the two sources. Send both eSwabs together as one culture.
Transport Container
eSwab
Transport Temperature
Ambient / Room Temperature
Specimen Stability
For Swabs: Send to the Lab within 2 hours of collection.
Eswab is stable for up to 48 hours.
DO NOT refrigerate specimens.
DO NOT place specimens on ice.
Eswab is stable for up to 48 hours.
DO NOT refrigerate specimens.
DO NOT place specimens on ice.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Dry swabs
Specimens from other sites
Culture swabs other than eSwabs
Other culture swabs such as from collection kits for Amplified Probe or other DNA testing
Specimens from other sites
Culture swabs other than eSwabs
Other culture swabs such as from collection kits for Amplified Probe or other DNA testing
Clinical Significance
Intrauterine infection of the fetus results from ascending spread of GBS from the vagina of a colonized woman who is
typically asymptomatic. Fetal aspiration of infected amniotic fluid can lead to stillbirth, neonatal pneumonia, or sepsis.
Infants can also become infected with GBS during passage through the birth canal.
The gastrointestinal tract serves as the natural reservoir for GBS and is the likely source of vaginal colonization.
typically asymptomatic. Fetal aspiration of infected amniotic fluid can lead to stillbirth, neonatal pneumonia, or sepsis.
Infants can also become infected with GBS during passage through the birth canal.
The gastrointestinal tract serves as the natural reservoir for GBS and is the likely source of vaginal colonization.
