Group B Streptococcus screening test

This test is performed on pregnant women to detect the presence of colonisation of the genital area by Group B Streptococcus. This bacterium colonises approximately 30% of pregnant women and can, rarely, cause life-threatening blood infections and meningitis in newborns. Screening for Group B Streptococcus carriage usually occurs in the third trimester of pregnancy so that prophylactic antibiotics can be administered to colonised mother at the time of delivery to prevent these nasty complications.

Collection instructions*:

After completing the paperwork, the collector will give you gloves and a swab to use for the collection. The collector can stay in the collection room to advise you, or, if you prefer, will leave you in private to collect the sample.

Step 1 Wearing both gloves, find a comfortable position, either lying on the bed or standing, whichever is most comfortable for you. Remove the swab from the packaging and, holding the plastic end of the swab, insert the cotton end of the swab 2cm into your vagina and remove.

Step 2 Using the same swab, insert the cotton end 1cm into your anus (back passage) and remove.

Step 3 Remove the cap from the plastic sterile tube and place the swab into the tube. Ensure the cap fits firmly.

Step 4 On the label of the plastic tube, write your name, date of birth, and the date and time of the collection. Remove the gloves and dispose of them in a rubbish bin, and wash your hands.

Place the swab container in the transport bag and hand it to the collector.


*Please note that collection images have been removed from these online instructions. For a copy of this patient note that includes these images, please visit your closest collection centre or telephone Patient Services Support on 1300 732 030.


Item number 34049 - Issue date September 2018