Strep Group B Culture

Lab502

GBSS
Prenatal (broth-enriched) Group B Strep Detection
Group B Strep Screen
 

Genital, Rectal Swab

The technique of swabbing the vagina is extremely important in obtaining an adequate specimen. Swab specimens should be taken prior to application of any preparatory reagents (i.e.; antibiotic wash, Betadyne, KY Jelly). Using only a sterile dacron or rayon tipped swab, swab the cervix/endocervix followed by the lower 1/3 of the vagina using a circular motion as the swab is removed. Avoid touching the rectum with the swab. Swabs with wooden shafts, calcium alginate or cotton tips interfere with the test results and should not be used. All swab samples should be processed within 72 hours of collection. Swabs may be stored and transported at ambient temperature, in a dry, sterile tube or in a sleeve containing modified Stuart's medium or Amies medium. The use of charcoal based transport media or semi-solid based transport medium is not recommended as it may interfere with assay performance. Manufacturers' recommendations should be followed regarding the use of any swab type.

ESwab (White top)

Ambient

Ambient – 72 hours

Improper collection
Improper swab
Improper or no label
Storage and stability specifications not met

Daily

No Streptococcus Group B isolated
 

Because approximately 10 to 30 percent of all pregnant women are colonized with Streptococcus agalactiae (group B), the prevention of vertical transmission of the organism to the infant is of great concern.  Studies have shown that intrapartum administration of antibiotics, particularly ampicillin, to the mother is successful in interrupting transmission.  Those women experiencing early labor, prolonged rupture of membranes, previ-ously diagnosed with infections, or a history of maternal fever are at particularly high risk for group B strep-tococcal colonization and/or infection and should be screened by either culture or rapid detection.