13 October, 2010

Kirby-Bauer antibiotic testing (disk diffusion)

Staphylococcus aureus
Left:Aztreonam disc(30μg/ml).
Right:Vancomycin disc(30μg/ml)
--------Dr. Mizuno, Clinical Laboratory, Yamaguchi University School of Medicine

Kirby-Bauer antibiotic testing (disk diffusion) is a test for determine which antibiotics
is susceptible to a bacteria. A bacteria(Staphylococcus aureus) are grown on agar
plates, while the small discs(containing antibiotics: Aztreonam or Vancomycin) are
placing for overnight. Clear zone indicate the inhibition of a bacteria's growth.

Any Questions: write to
Keiji Hagiwara, MD
Kami-Ube Pediatric Clinic,
e-mail: keijihagiwara@gmail.com