At a Glance
Why Get Tested?
To screen a pregnant woman for the presence of group B streptococcus (GBS) to determine the risk that she will pass the bacteria on to her newborn, possibly resulting in a serious infection
When to Get Tested?
When a pregnant woman is between 35 and 37 weeks of gestation or has preterm labor or preterm premature rupture of membranes
A culture swab obtained from the vagina and rectum of a pregnant woman; a urine sample collected anytime during pregnancy may be used to detect significant numbers of GBS.
Test Preparation Needed?