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Medium for the simultaneous detection of pyocyanin and fluorescein pigments of Pseudomonas aeruginosa.

To help simplify the identification of Pseudomonas aeruginosa by clinical microbiology laboratories, the authors developed a new medium, pyocyanin-fluorescein agar (PFA), which enhances the production of both Pseudomonas pigments simultaneously. Production of pigments on PFA was equivalent to production on a pyocyanin agar (P agar) and a fluorescein agar (F agar) used in combination and was superior to either P agar or F agar used alone. The medium is simple to prepare and it detected pigment in 94% of P. aeruginosa isolates tested.