<<Disclaimer: Verify this information before applying it to your situation.>> Hello, I recently posted a general food allergy question thread. I am summarizing responses, and have found many of them very helpful. I have a question now about blood testing accuracy and usefulness for food allergies. Have you found them useful/accurate? Is there a high rate of false positives or negatives? Do I have to be eating the food at the time of the test to get a reaction..that is, as with the Celiac blood test, one needs to have a certain amount ciculating to get a positive reading. Or does this not matter with most other allergies? I would consider them perhaps more a tool, going by the reaction of ingested foods, but wonder if getting one done might help pinpoint some things to keep a watch out for (since I seem to have delayed reactions). My allergist seemed to think blood tests and skin tests are a waste of money for food allergies. Skin tests I understand, but I would like another opinon about how blood tests can be used. Additionally, I have read that results for ELISA and RAST are pretty much similar--do you, in your experience, find this to be true? Thanks, Saskia * Send administrative questions to [log in to unmask] *