Porges–Meier reaction

Porges–Meier reaction is a precipitation test used in the diagnosis of syphilis. It is an early flocculation test for syphilis. It is named for Georg Meier and Otto Porges.

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