Radioactive material is injected to highlight organs on a special camera.
A RAST requires a blood sample, which is sent to a medical laboratory where tests are done with specific foods to determine whether the patient has IgE antibodies to that food. Usually used to diagnose chronic constipation and fecal incontinence. Also called regurgitation. RICE treatment - rest, ice, compression, and elevation. Us Copyright 1999 Sentara Healthcare.