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Doctor insights on: Will Food Allergy Cause Blood In Urine

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Can hormone imbalance cause blood in urine to occur? Is there possibility that any form of food eaten cause blood in the urine?

Can hormone imbalance cause blood in urine to occur? Is there possibility that any form of food eaten cause blood in the urine?

See a doctor: Blood in urine is abnormal and needs evaluation. Possible causes include stones, infection, blood disorders, and cancer. Foods do not cause blood in the urine. Hormone imbalance should not cause blood in the urine unless the urine contains menstrual blood. Please see a doctor right away. ...Read more

Urine (Definition)

Urine is the product of the kidneys, which is produced to eliminate the waste products of metabolism, manage body fluid balance, &maintain acid-base balance. The blood is first filtered by the kidneys, and the composition of the resulting fluid is then altered depending on the body's needs. It is composed of mostly water, and breakdown products from blood cells impart ...Read more


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3.5yr old with small fiber neuropathy, high b12, food allergies, normal blood work... What could be the cause? . Metal exp? Lyme? Guillian barre?

3.5yr old with small fiber neuropathy, high b12, food allergies, normal blood work... What could be the cause? . Metal exp? Lyme? Guillian barre?

Need more info: Without the ability to examine and have access to all medical history it is impossible to diagnose. See a pediatric neurologist and hope your baby is better soon. ...Read more

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4 yr son. Had respirtory&food allergy blood tests. Results only very low cows milk allergen. Cld it cause stuffy nose&snoring? Adenoids&tonsils remvd 2015

4 yr son. Had respirtory&food allergy blood tests. Results only very low cows milk allergen. Cld it cause stuffy nose&snoring? Adenoids&tonsils remvd 2015

Milk allergy: Generally food allergies are outgrown by the time the child is 2 yrs old
if your child is still allegic even if mild you should avoid milk
he should be fully tested to see if there are other allergies
if not he can have congestion and wheezing ...Read more

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

Just ask: Keep in mind however, that blood testing for food allergies can sometimes overestimate allergic reactivity. Thus, skin testing is usually the preferred method. Talk to your allergist about which method would be best for you. ...Read more

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I have developed over 40 different food allergies in less than 6months. Full blood work and they can't tell me why? Its only getting worse. Help.

I have developed over 40 different food allergies in less than 6months. Full blood work and they can't tell me why? Its only getting worse. Help.

Be wary of labels: Some of the available skin tests are easily over interpreted as can blood tests. I suppose you didn't get labeled with many of these food allergies until the tests were done with no clear symptom patterns beforehand. Any such labels should be verified by an experienced board certified Allergist. These can happen but having been through much of this myself, I would be cautious in accepting it all ...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 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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Is there a simple blood test for food allergies?

Is there a simple blood test for food allergies?

Yes: A serum immunocap can test for food and environmental allergies. ...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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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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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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How common is anapylaxis? Doc took blood and found no common food allergies does this mean I shouldn't worry or what? How often does a severe one occur

Consider it rare: It is hard to comment on your food allergy testing without knowing what type of testing was done. If they looked at IgE response the common offenders & yours were low, it suggests you would not have a risk of anaphylaxis with those foods. Other blood & skin tests do not always correlate with life experiences. If you get hives after eating a food, you probably will the next time, but not anaphylaxi ...Read more

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Can complete blood count (CBC) detect I have allergy food allergy or other allergy or I do other test for allergy?

Can complete blood count (CBC) detect I have allergy food allergy or other allergy or I do other test for allergy?

Need specific tests: Specific allergy tests whether by blood or skin test guided by a thorough history is needed. Routing blood tests don't include this. ...Read more

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What can happen if I ignore my food allergies? Blood test showed that I'm allergic to beef, pork, and gluten among other things. I'm 22.

What can happen if I ignore my food allergies? Blood test showed that I'm allergic to beef, pork, and gluten among other things. I'm 22.

Consultation: Food allergies by blood testing can often lead to false positive results. It is important also to note whether this testing was an ige or and IgG blood test. Tests alone can not be used to managing food allergies and it is imperative to speak to a board certified allergist to present your signs and symptoms in addition to your tests and come up with a plan of management. ...Read more

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What is blood test for? What other tests are available for atopic dermaitis, allergies, food allergies? I'm trying to figur eout food allergies

What is blood test for? What other tests are available for atopic dermaitis, allergies, food allergies? I'm trying to figur eout food allergies

Skin test: Skin tests performed by board certified allergists are very reliable and give you immediate results on a variety of allergies, food, environmental allergens, etc. Consult an allergist for your answers. ...Read more

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My fasting blood sugar rose from 81 to 101 in two months. My family doesn't have diabetic. I had food allergy last week. Can that be the reason?

Need more info: Did you gain weight in the past two months? If you did, try to lose the extra weight. Start exercising, with increasing vigor, for at least 150 minutes/week. Reduce your intake of carbohydrates, you may wish to consult a dietitian. Once to do these things, try to get your test repeated in about three months. Food allergy is not a likely factor. ...Read more

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When doing a blood test for a food allergy, does the food have to be present in body? Or can it be eaten like 6 mos ago for example? Celiac too?

When doing a blood test for a food allergy, does the food have to be present in body? Or can it be eaten like 6 mos ago for example? Celiac too?

IgE antibodies: Are what being measured in your blood if we suspect allergy to specific foods, those antibodies are produced and stay there, means you were exposed and developed allergy to the food element in question, the food doesn't have to be currently present in your body, and could have been eaten years earlier ...Read more

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Blood test for common food allergies negative does this mean there won't be any reactions to food or anaphylaxis?!

Maybe, maybe not: The test would suggest you have no indication of an allergic response to the items tested. This would suggest you will not be troubled by a bad reaction to those items for your life, but you can develop a food allergy or intolerance later in life. Most food allergies are not of the anaphylaxis type, but produce hives or other symptoms. ...Read more

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If I have a positive Quest Diagnostics blood test for a food allergy, could a skin test give a stronger confirmation? So many positives for foods!

Blood tests: For food allergies are somewhat unreliable - as there are many problems with cross reactivities on the assays. Unless you have had a particular event like you were unable to breathe or throat swelling after eating a particular food and are sure there was nothing else causing it- then these results may not be clinically important. Pollen/ and environmental allergy testing is much more reliable. ...Read more

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FDA has not approved food allergy tests that use a few dried blood spots for measuring IGg. Are they reliable? What's a good way to test for such?

Not particularly: IGG to foods will often be up in people with no food sensitivity and as such is unlikely to provide useful information. On the other hand, an elevated IGE to various foods can signal significant food sensitivity and may warrant caution, this is the immune factor associated with anaphylaxis, the most severe reaction. Various companies offer IGE food panels that correlate with allergist skin testing ...Read more

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I've heard that skin tests are better and more effective for food allergy testing than blood tests. If I use HealthTap, how can skin tests be done?

I've heard that skin tests are better and more effective for food allergy testing than blood tests. If I use HealthTap, how can skin tests be done?

See actual doctor: Health tap could not help when A physical doctor visit become necessary. Allergy test is one of them. So the best way is to see allergy specialist in your area ...Read more

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My blood test for common food allergies came back negative. Does this mean I do not have any food allergies and won't have anaphylaxis? Explain please

My blood test for common food allergies came back negative. Does this mean I do not have any food allergies and won't have anaphylaxis? Explain please

No guarantees: Not every food group was likely tested, nor is every food sensitivity detected by blood-work. Sorry, but food allergies are still an imperfect science. ...Read more

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Can a primary care doctor order blood tests for food allergies? Is it fair to ask them to?

Can a primary care doctor order blood tests for food allergies? Is it fair to ask them to?

Yes...but: Primary care doctors can order blood testing for food allergies but they will often refer you to an allergist for interpretation if positive. They also might diagnose you with a food allergy that you might not have because they are not as experienced interpreting results. I would recommend seeing an allergist first if concerned about food allergies, better to go straight to the experts. ...Read more

Dr. Michael Michaels
640 Doctors shared insights

Blood In Urine (Definition)

Hematuria is the presence of blood in the urine. When you can see the blood, it's called gross hematuria. When the blood can only be seen under a microscope it is known as microscopic hematuria. Hematuria can be caused by kidney stones, kidney infections, urinary tract infections, an enlarged prostate, cancer, certain medications, and ...Read more


Dr. John Chiu
2,638 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