Resources for Laboratorians
2010 Guidelines
Questions and Answers Relevant to Laboratorians
Algorithms
- Algorithm for recommended laboratory testing for prenatal screening for group B streptococcal (GBS) colonization Cdc-pdf[1 page].
- Customized Flowcharts for 2010 Guidelines (algorithms for pigmented broth, non-pigmented broth, NAAT, etc.)
Tables
The widespread use of intrapartum antibiotic prophylaxis to prevent early-onset group B strep disease has raised concern about the development of antibiotic resistance among group B strep isolates. Learn more about testing for group B strep isolates for antimicrobial susceptibility.
- Procedures for collecting clinical specimens for culture of group B Streptococcus (GBS) at 35–37 weeks’ gestation Cdc-pdf[1 page].
- Procedures for processing clinical specimens for culture of group B Streptococcus (GBS) Cdc-pdf[1 page].
- Procedures for clindamycin and erythromycin susceptibility testing of group B streptococcal (GBS) isolates, when ordered for penicillin-allergic patients Cdc-pdf[1 page].
- Identification of group B Streptococcus (GBS) bacteriuria in pregnant women Cdc-pdf[1 page].
Slide Sets
- Early-onset Group B Streptococcal Disease Prevention: Procedures for Laboratories Cdc-ppt[5.34 MB, 54 pages] | PDF Cdc-pdf[2.26 MB, 54 pages] 508 compliant
Clinical Overview
Standard Operating Procedures for 2010 Guidelines for Laboratorians
Standard operating procedures, developed by the American Society for Microbiology (ASM) and CDC’s Streptococcus Laboratory, are available to assist laboratorians in processing group B Streptococcus specimens. The five documents are consistent with the recommendations in the 2010 GBS guidelines, but are tailored for use in different settings, depending on the procedures and assays used in each laboratory (e.g. pigmented or non-pigmented broth, sub-culture versus serologic or molecular methods, etc.).
Note: The Word documents can be modified to adapt for use in individual laboratories. The PDFs are provided simply for Section 508 accessibility.
- Using non-pigmented broth and only subculture for isolation and identification of GBS
Word Cdc-word[9 pages] | PDF Cdc-pdf[8 pages] - Using non-pigmented broth and serologic or molecular testing for identification of GBS
Word Cdc-word[9 pages] | PDF Cdc-pdf[8 pages] - Using pigmented broth and only subculture for isolation and identification of GBS
Word Cdc-word[9 pages] | PDF Cdc-pdf[8 pages] - Using pigmented broth and serologic or molecular testing for identification of GBS
Word Cdc-word[9 pages] | PDF Cdc-pdf[8 pages] - Using non-pigmented broth and only NAAT for identification of GBS
Word Cdc-word[9 pages] | PDF Cdc-pdf[8 pages]
