For Laboratorians

Guidelines Changes Expected in 2019

CDC plans to retire its 2010 GBS guidelines when new GBS guidelines are available from partners. Learn more >>

Key Differences for Laboratorians in 2010 Guidelines compared to 2002 Guidelines

  • Expanded options for laboratory detection of group B Streptococcus (GBS), including use of pigmented media and polymerase chain reaction (PCR) assays
  • There is a revised colony count threshold for laboratories to report GBS in the urine of pregnant women.