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Prenatal Group B Strep (GBS) Screening

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Also known as: Group B Beta-hemolytic Streptococcus; Group B Streptococcus; Group B Strep; GBS; Strep Group B; Streptococcus agalactiae; Beta-hemolytic Strep Culture
Formal name: Prenatal Group B Streptococcus Screening

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NOTE: This article is based on research that utilizes the sources cited here as well as the collective experience of the Lab Tests Online Editorial Review Board. This article is periodically reviewed by the Editorial Board and may be updated as a result of the review. Any new sources cited will be added to the list and distinguished from the original sources used. To access online sources, copy and paste the URL into your browser.

Sources Used in Current Review

(2016 July 11 Updated). Protect Your Baby from Group B Strep! Centers for Disease Control and Prevention. Available online at https://www.cdc.gov/Features/GroupBStrep/. Accessed on 3/19/17.

(2016 May 23 Updated). Group B Strep (GBS), Prevention in Newborns Centers for Disease Control and Prevention. Available online at https://www.cdc.gov/groupbstrep/about/prevention.html. Accessed on 3/19/17.

Burd, I. and Zieve, D. (2016 January 20 Updated). Group B streptococcus – pregnancy. MedlinePlus Medical Encyclopedia. Available online at https://medlineplus.gov/ency/patientinstructions/000511.htm. Accessed on 3/19/17.

(© 1995–2017). Group B Streptococcus (Streptococcus agalactiae) Culture. Mayo Clinic Mayo Medical Laboratories. Available online at http://www.mayomedicallaboratories.com/test-catalog/Overview/87346. Accessed on 3/19/17.

Fisher, M. and Schlaberg, R. (2016 December Updated). Streptococcal Disease, Group B - Group B, Strep. ARUP Consult. Available online at https://arupconsult.com/content/streptococcal-disease-group-b. Accessed on 3/19/17.

Woods, C. and Levy, C. (2016 October 24 Updated). Streptococcus Group B Infections. Medscape Drugs and Diseases. Available online at http://emedicine.medscape.com/article/229091-overview Accessed on 3/19/17.

Lee, K. and Zieve, D. (2014 December 12 Updated). Group B streptococcal septicemia of the newborn. MedlinePlus Medical Encyclopedia. Available online at https://medlineplus.gov/ency/article/001366.htm. Accessed on 3/19/17.

Bidgani, S. et. al. (2016 March). Comparison of group B streptococci colonization in vaginal and rectal specimens by culture method and polymerase chain reaction technique. J Chin Med Assoc. 2016 Mar;79(3):141-5. Available online at https://www.ncbi.nlm.nih.gov/pubmed/26803202. Accessed on 3/19/17.

Sources Used in Previous Reviews

Woods, C. and Levy, C. (Updated 2010 May 17). Streptococcus Group B Infections. eMedicine [On-line information] Available online at http://emedicine.medscape.com/article/229091-overview. Accessed October 2010.

Comer, Yun, H. and Hamza, H. (Updated 2010 February 11). Bacterial Infections and Pregnancy. eMedicine [On-line information] Available online at http://emedicine.medscape.com/article/235054-overview. Accessed October 2010.

Mayo Clinic Staff (2008 December 5). Group B strep MayoClinic.com [On-line information] Available online at http://www.mayoclinic.com/health/group-b-strep/DS01107/METHOD=print. Accessed October 2010.

Lee, K. and Zieve, D. (Updated 2009 December 10). Group B streptococcal septicemia of the newborn. MedlinePlus Medical Encyclopedia [On-line information] Available online at http://www.nlm.nih.gov/medlineplus/ency/article/001366.htm. Accessed October 2010.

(Reviewed 2008 April 20). Group B Strep Prevention (GBS, baby strep, Group B streptococcal bacteria) General Public, Frequently Asked Questions. Centers for Disease Control and Prevention [On-line information]. Available online at http://www.cdc.gov/groupbstrep/about/index.html. Accessed October 2010.

Bush, L. et. al. (Revised 2009 December). Streptococcal and Enterococcal Infections. Merck Manual for Healthcare Professionals [On-line information] Available online at http://www.merck.com/mmpe/sec14/ch171/ch171d.html?qt=group b strep&alt=sh. Accessed October 2010.

(2010 March). Group B Strep Infection. March of Dimes Fact Sheet [On-line information] Available online at http://www.marchofdimes.com/professionals/14332_1205.asp. Accessed October 2010.

Forbes, B. et. al. (© 2007). Bailey & Scott's Diagnostic Microbiology, 12th Edition: Mosby Elsevier Press, St. Louis, MO. Pp 265-279.

(November 19, 2010) Centers for Disease Control and Prevention, Morbidity and Mortality Weekly Report, Prevention of Perinatal Group B Streptococcal Disease, 59(RR10);1-32. Available at http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5910a1.htm?s_cid=rr5910a1_w. Accessed November 2010.

Centers for Disease Control and Prevention. Group B Strep (GBS). Available online at http://www.cdc.gov/groupbstrep/index.html. Accessed November 2010.

Quest Diagnostics. Streptococcus Group B Culture. Available online at http://www.questdiagnostics.com/testcenter/TestDetail.action?ntc=5617. Accessed June 2013.

Centers for Disease Control and Prevention. Fast Facts and Statistics on GBS. Available online at http://www.cdc.gov/groupbstrep/about/fast-facts.html. Accessed June 2013.

Centers for Disease Control and Prevention. Symptoms, Diagnosis, and Treatment of GBS in Newborns. Available online at http://www.cdc.gov/groupbstrep/about/symptoms-diagnosis-treatment.html. Accessed June 2013.

Centers for Disease Control and Prevention. GBS Prevention in Newborns. Available online at http://www.cdc.gov/groupbstrep/about/prevention.html. Accessed June 2013.

Bacterial Infections and Pregnancy: Group B Streptococcus. Medscape. Available online at http://emedicine.medscape.com/article/235054-overview#aw2aab6b3. Accessed June 2013.