Sigma-GBS™ – Group B Strep

320,000 babies develop invasive Strep B infection. 90,000 babies under 3 months die from Strep B infection. ( Group B Strep infection is preventable and should be detected sooner before the baby is born.

SIGMA GBS™ is a swab-based device. It enables direct collection and rapid processing of specimens for screening for Streptocccus agalactiae. It has an enrichment broth, which means that after incubation, the specimen is ready for direct plating on chromogenic agar for the detection and identification of Streptocccus agalactiae, or for testing by molecular techniques such as PCR.

Sigma-GBS™ can be stored at ambient temperature allowing the products to be kept near the patients ready for testing. It includes a 2ml vial of Lim broth (for the enrichment of Group B Streptococcus) and a swab which can be snapped into the vial. 

Industry Categories:
Recommended applications

Screening for Streptocccus agalactiae is normally performed in late pregnancy. The swab is used to collect specimen(s) in normal way from vagina and/or rectum.

  • Lim Broth Medium
  • Enrichment of specimens ready for direct plating on chromogenic agar
  • Interfering bacteria inhibited, including E. coli
  • Liquid format compatible with automated processing platforms
  • Simpler processing and faster turnaround
  • Convenient Snap ‘n’ Cap format for easy specimen handling
  • Convenient format for screening for Group B Streptococcus colonisation
Product Codes
Code Description Cap colour Swab length Pack size No. in a case Shelf life
MWGBS Liquid GBS 2ml Standard Tip Polyurethane Foam Turquoise 15cm 125 1000 6 months
MWGBSPF Liquid GBS 2ml Tapered Shaft Standard Tip Superior Flock Light Blue 15cm 125 1000 6 months
MWGBST Liquid GBS 2ml with No Swab Turquoise - 50 - 6 months
Document Name
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Product Insert / IFU
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∑-GBS (Sigma GBS) Product Insert English
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∑-GBS (Sigma GBS) Product Insert Italian
Independent Studies
Document Name
Evaluation to show Sigma GBS enrichment broth can speed up the handling of Streptococcus agalactiae specimens, and make universal screening a more practical proposition. - Khan and Jones
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Prevention of Neonatal Deaths - Evaluation of Sigma GBS transport system for Streptococcus agalactiae screening - Szxzypkowska and Stuczen
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All MWE Liquid Media and Swabs are compatible with the FilmArray system, bioFire - Laughlin,2017
Sigma-GBS™ – Group B Strep articles and clinical studies

Contact us


+44 (0) 1225 810361


Medical Wire & Equipment
Corsham, Wiltshire
SN13 9RT

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