page_title: Granada medium
section_title: Uses
hierarchical_section_title: Granada medium / Uses
caption_attribution_description: English: Streptococcus agalactiae (SGB) red colonies on Granada Agar. Vagino-rectal culture
context_page_description: Granada medium is a selective and differential culture medium designed to selectively isolate Streptococcus agalactiae and differentiate it from other microorganisms. Granada Medium was developed by Dr. Manuel Rosa-Fraile et al. at the Service of Microbiology in the Hospital Virgen de las Nieves in Granada.
  Identification of GBS on granada medium is straightforward and relies on detection of granadaene, a red polyenic pigment specific of GBS.
context_section_description: GBS grows on granada agar as pink-red colonies after 18–48 hours of incubation (35-37 °C), better results are obtained in anaerobiosis (culturing in an anaerobic environment).
  Granada agar is used for the primary isolation, identification and screening of β-hemolytic GBS from clinical specimens.
  This culture medium is selective for GBS, nevertheless other microorganisms (such as enterococci and  yeasts), resistant to the selective agents used, can develop as colorless or white colonies.
  Granada agar is useful for the screening of pregnant women for the detection of vaginal and rectal colonization with GBS to use intrapartum antibiotic prophylaxis to avoid early-onset GBS infection in the newborn.
caption: Red colonies of Streptococcus agalactiae on granada agar. Vagino-rectal culture 18h incubation 36°C anaerobiosis
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