Stokes' Congo Red
|Alkaline Congo Red|
|Dissolve the potassium hydroxide in the ethanol.|
|Add sufficient dye to saturate. Leave overnight and filter.|
|Stable for about 3 months.|
5µ paraffin sections of neutral buffered formalin fixed tissue are suitable.
Other fixatives are likely to be satisfactory.
Frozen sections are suitable.
Stokes, Gwen, (1976),
An improved congo red method for amyloid,
Medical Laboratory Sciences, v 33, 79
Last updated January 2019