Porges-Meier reaction

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Porges-Meier reaction is a precipitation test used in the diagnosis of syphilis.

It is an early flocculation test for syphilis.

Precipitate formation takes place in a serum by the addition of a solution of sodium glycocholate. This reaction, according to Otto Porges, only occur in syphilis.

Reference:

http://ajp.psychiatryonline.org/cgi/content/abstract/65/4/653