I Icon761 Guest Jan 19, 2011 #1 Can anyone please tell me how effective is the Rast test? Thank you, Icon761
T Titchou Guest Jan 20, 2011 #2 Well, generally speaking, it's not as specific as the scratch test. But it can be good for determining the cause of eczema, I'm told. It generally will say you are allergic to trees but not which trees, etc. Hope that helps.
Well, generally speaking, it's not as specific as the scratch test. But it can be good for determining the cause of eczema, I'm told. It generally will say you are allergic to trees but not which trees, etc. Hope that helps.