1. Yes, “neon green” drainage is usually due to P. aeruginosa which secretes a variety of pigments, including pyorubin (red-brown), pyocyanin (blue-green), and pyoverdine which is yellow-green and fluorescent. The pyocyanin and pyoverdine are probably what causes the “neon green” color. How the bacteria produce these pigments is really quite fascinating although it’s not my area of expertise. Because P. aeruginosa announces its presence so loudly with these colors, it may be easy to overlook other bacterial contributors to colonization and/or infection. Now that I am doing DNA assays using the services of Pathogenius labs, I am finding many bacteria present in wounds that contribute to bioburden.

      The World Union has a great publication on wound drainage that is available here:


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