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Doctor insights on: Blood Type Food Allergies

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How can I insist on special tests, i.E. Blood tests, tests for food allergies?

How can I insist on special tests, i.E. Blood tests, tests for food allergies?

Offer to pay: Laboratory as well as radiological testing is one of the most expensive things we do in medicine. Insurance companies have contrived to reduce payments to physicians to amounts they paid 20-30 years ago. A medical opinion by a credentialed, board-certified specialist is a bargain. See an allergist. But if you must have that special test for your reassurance offer to pay for it out-of-pocket. ...Read more

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Dr. Michael Zacharisen
569 doctors shared insights

Food Allergy (Definition)

Allergies usually mean there is a response like diarrhea, vomiting, hives, or anaphylaxis when that food is eaten. Other allergies can be more subtle and lead to chronic congestion, headaches, eczema, rashes, constipation, etc. Best answer- if concerned about a particular food eliminate it from your diet and see how you respond. You can ...Read more


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If food allergy prick test is negative (mild redness) and blood rast test negative is it mean you are not allergic to foods?So y get reaction to foods

If food allergy prick test is negative (mild redness) and blood rast test negative is it mean you are not allergic to foods?So y get reaction to foods

Not 100%: If both tests are negative, the chance of being allergic to that food is very very small. However when the history of a food allergy is strong, and the tests were negative, i often ask the patient to bring in the fresh food for the testing instead of relying on commercial food extracts. If the person is still quite concerned over it a challenge test can be done at the office. ...Read more

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How accurate are food allergy blood tests? Do they generally detect then well?

How accurate are food allergy blood tests? Do they generally detect then well?

Not very accurate: There are no double blind studies to show accuracy. The best test is feeding test where a food is eliminated for about 1 week and then reintroduced to see if it causes symptoms. Never test a food that has or you may suspect that it may be a cause for anaphylactic or severe reaction including angioedema. ...Read more

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My blood results came back with food allergies, is it safe to eat those foods if no allergic symptoms occur?

My blood results came back with food allergies, is it safe to eat those foods if no allergic symptoms occur?

See below: Food allergy is diagnosed by taking a history. Skin testing and/or blood testing is utilized to support the clinical suspicion of food allergy. Skin testing / blood testing should never be done in the absence of a proper history documenting a potential food allergy ( with few exceptions). Based upon the results of one's history and testing, decisions can be made about consuming the food. ...Read more

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My blood result came back with food allergies, is it safe to eat those foods if I have no allergic symptoms?

My blood result came back with food allergies, is it safe to eat those foods if I have no allergic symptoms?

Food allergy: Blood tests and skin tests are not very helpful in diagnosing food allergy. It is okay to eat those foods as long as there are no allergic symptoms. ...Read more

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Can complete blood test diagnosis i have food allergy or other allergy or i do other test for allergy my complete blood test are normal.

Can complete blood test diagnosis i have food allergy or other allergy or i do other test for allergy  my complete blood test are normal.

Specific test: Routine blood tests do not include tests for specific food or other allergens. "Shotgun" testing for a bunch of foods without a thorough history to match the results is NOT recommended because there are so many false positive results which could lead to unnecessary avoidance. Allergists are specifically trained and experienced in this matter. ...Read more

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Dr ordered blood allergy tests, but i've read these tests are unreliable. if they show food allergies should i believe it? skin testing is negative.

Dr ordered blood allergy tests, but i've read these tests are unreliable. if they show food allergies should i believe it? skin testing is negative.

Need confirmation: RAST blood tests can be suggestive of some food allergies, but will need to be confirmed by some sort of food challenge to be diagnostic of that food allergy. ...Read more

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Has anyone ever had a blood test to screen for food allergies?

Has anyone ever had a blood test to screen for food allergies?

Not reliable: The gut has its own immune system to suppress immune reactions to foods; you can have a positive ige blood test to foods to which you don't react (false positive). Commonly available igg tests have no correlation with allergic reactions to foods. The best way to diagnose food allergies is to have an allergist take a comprehensive history of food-associated reactions, and do skin tests to confirm. ...Read more

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Dr. John Chiu
2,491 doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


Dr. Heidi Fowler
3,408 doctors shared insights

Nutrition (Definition)

Nutrition is the synergistic combination of nutrients found in food and water that allows the human body to perform all essential ...Read more