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Doctor insights on: Allergy Test Neg

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Dr. John Chiu
2,630 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


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Flushing reaction after eating foods, no commonality yet, throat weird. Mastocytosis negative, blood allergy test neg, food allergy on back neg. What is it?

Flushing reaction after eating foods, no commonality yet, throat weird. Mastocytosis negative, blood allergy test neg, food allergy on back neg. What is it?

Oral allergy syndrom: If the foods are mostly raw fruits veggies and nuts and you are allergic to pollens, these symptoms could be related to oral allergy syndrome or pollen food allergy syndrome. ...Read more

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Bad flushing neck, face, arms after eating. No common triggers. Blood and food allergy test neg, mastocytosis neg, carcinoid neg, I'm going crazy, why?

Bad flushing neck, face, arms after eating. No common triggers. Blood and food allergy test neg, mastocytosis neg, carcinoid neg, I'm going crazy, why?

Flushing after meal: I know it is very frustrating but please continue to be a good detective to find out what is happening. A more sensitive food sensitivity panel may help. See Great Plains Laboratory in Texas website. They have an excellent one. Stick w/your doc and consider a second option. Peace and good health. ...Read more

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Bad hot flushing neck, face, arms tight throat w/eating. Uncommon triggers. Blood, food allergy test neg, masto neg, carcinoid neg, Going crazy, why?

Bad hot flushing neck, face, arms tight throat w/eating. Uncommon triggers. Blood, food allergy test neg, masto neg, carcinoid neg, Going crazy, why?

See ENT: Sometimes panic attack can account for your symptoms when nothing abnormal has been found. Suggest that you consult an ENT to check out your throat preferably at a time when you have the throat tightening symptoms. Are you anxious most of the time? If so, treating the anxiety may well be the best option. ...Read more

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Sensitive stomach, almost immediately after eating, severe gas pain and diarrhea. Can't pinpoint certain foods. What is causing it? Allergy test neg.

Sensitive stomach, almost immediately after eating, severe gas pain and diarrhea. Can't pinpoint certain foods. What is causing it? Allergy test neg.

? intolerance: Not all food induced reactions are allergic in nature, in fact, most are intolerances. Regardless, if symptoms occur consistently with the same food, it should be treated as an allergy and avoided. Keep a 'food journal' to help you determine a common ingredient. ...Read more

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Poss. Sinus infection july. Resolved w/ antiobiotcs/steroids. Returned sept. 3 rounds antiobiotics/steriods. Ct scan ok. Allergy test neg. Bad ear pressure for 3mos. Cant release&some pain. Ears main concern?

Poss. Sinus infection july. Resolved w/ antiobiotcs/steroids. Returned sept. 3 rounds antiobiotics/steriods. Ct scan ok. Allergy test neg. Bad ear pressure for 3mos. Cant release&some pain. Ears main concern?

Enlarged adenoids: Rhinitis and enlarged adenoids can cause back pressure on eustachian tube (middle ear canal) and cause ear pain, overwieght/obesity would cause such upper airway problems in adults steroids nasal sprays would help negative allergy skin testing does not rule out chronic nasal non allergic inflammation or skin testing might need to be repeated including more aeroallergens, upper airway endoscopy. ...Read more

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Why is anaphylaxis a severe fear to people who had never experienced it from food and a common food allergy test was neg?!

Why is anaphylaxis a severe fear to people who had never experienced it from food and a common food allergy test was neg?!

Phobia: One can develop a phobia to anything -- and you've said in previous questions ; comments that this is the case with you. Phobias can range in intensity. The underlying (unconscious) process of "how" or "why" your mind creates a particular phobia depends on many things: your anxiety level, environmental influences, etc. Help is available with a good psychologist who can work with you. Best wishes. ...Read more

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I have laryngitis brought on by allergies, strep test was neg. I have an endoscopy set for thurs. Can they still do it w/the laryngitis?

I have laryngitis brought on by allergies, strep test was neg. I have an endoscopy set for thurs. Can they still do it w/the laryngitis?

Call and ask: Call and cask to be sure, but I think they still would be able to do the procedure. Laryngitis is likely just some irritation and shouldn't affect the airway. ...Read more

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Pos Allergy prick test but neg blood test. Which one is reliable. Don't want to stop eating if I'm not really allergic. Only get runny nose n tachycardia?

Pos Allergy prick test but neg blood test. Which one is reliable. Don't want to stop eating if I'm not really allergic. Only get runny nose n tachycardia?

Prick test allergy: Pos Allergy prick test but neg blood test. Which one is reliable. Don't want to stop eating if I'm not really allergic. Only get runny nose n tachycardia? ANS: Only real way to tell is to do a detailed food and runny nose/ tacky diary and then start dropping foods that you tested + for and see. But sounds to me that the symptoms don't really bother you? ...Read more

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Mast cell concern, normal blood wk, but flushing, short term rashes, sensitive skin, GI issues, allergies, allergy test change from all pos. To all neg.?

Mast cell concern, normal blood wk, but flushing, short term rashes, sensitive skin, GI issues, allergies, allergy test change from all pos. To all neg.?

See a specialist: Normal blood work taken when you are feeling relatively "normal" may not exclude all cases of mast cell disease. It may help to recheck certain labs (e.g., tryptase) within a couple hours of the start of an episode. There are also other potential causes for your symptoms, such as certain tumors, dermatographism, etc. I would see an expert in mast cell disorders and/or flushing disorders for help. ...Read more

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What to expect for allergy test?

What to expect for allergy test?

Relax: Allergy testing is easy and relatively painless. The most common is skin prick on the back which feels more like a tickle. You will have some itching after to any positives. This is easily treated and only lasts for around 30 min. You will want to make sure you don't take any antihistamines 5 days prior to your visit. ...Read more

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What's involved in an allergy test?

What's involved in an allergy test?

Blood and skin test: Skin test could be done by a plastic applicators or with needles. A drop of an allergen extract is pricked into the skin and, within 15-18 min., a localized hive will emerge if you are allergic to the extract in question. The reaction will subside in 40-60 minutes. The blood test is drawn at a regular lab and takes a few days to come back. Skin test is somewhat more sensitive. ...Read more

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What does an allergy test consist of?

What does an allergy test consist of?

Skin / blood test: Allergy testing can be done by skin testing or blood testing. The allergens tested for will be determined by one's history and geographic location (different pollens in different areas of the world). ...Read more

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Please help! What happens at an allergy test?

Please help! What happens at an allergy test?

Relax!: Allergy skin testing has come a long way over the years. The procedure is performed by board certified allergists. It typically takes about 2 seconds to place the test (back or forearm) with results in 20 minutes. A positive test will feel like a mosquito bite. Go to my blog at
:http://www. Familyallergyasthmacare. Com/2012/10/comfortable-allergy-skin-testing/. ...Read more

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What to do after an inconclusive allergy test?

What to do after an inconclusive allergy test?

Depends: Your question does not have enough information. We need more information in order to answer your question. What type of allergy test is that? Testing for which allergens? What are your symptoms and indication for allergy testing? And can you be more clear on how it is called inconclusive? ...Read more

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How does an allergy test work? Is it accurate?

How does an allergy test work? Is it accurate?

Allergy testing.: There are four different types of allergy testing, the most accurate being the scratch testing performed by an Allergist. They put various antigens under your skin and see to what you react. ...Read more

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Can you tell me how could an allergy test work?

Supports a history: -supports history. If a person gets sick at certain times of a year- a pos. Skin test to the appropriate seasonal allergen can help guide treatment and predict seasonal worsening.
- helps guide allergy avoidance. If an asthmatic with repeated worsenings
is test pos to cat, getting the cat off his chest at night can help.
-guides allergy desensitization. Anaphylaxis to bees, decreasing sensitivity. ...Read more

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What are the steps involved in an allergy test?

What are the steps involved in an allergy test?

Allergy skin test: After the allergist reviews the history and performs an exam the skin test process includes: cleansing the area to be tested with alcohol (back or arms), pressing allergy test device (containing drop of allergen) firmly to the skin for 2 seconds, waiting 20 minutes, then measuring the size of the wheal (bump) and flare (surrounding redness). The area is then wiped clean. Answer in 20 minutes! ...Read more

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How long does it take to get an allergy test done?

How long does it take to get an allergy test done?

About 30 minutes: Skin testing takes about 30 min. In many cases no needles are used and it is just a scratch. A little annoying but not painful. We even do it on young children. ...Read more

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On average, how long will an allergy test usually take?

On average, how long will an allergy test usually take?

Allergy testing: Allergy skin testing takes a couple of minutes to place the tests and the interpretation is done 20 minutes later.
Allergy blood tests typically take a few days up to 1 week to get the results back.
Allergy patch testing for allergic contact dermatitis (nickel, fragrance, chemicals, etc) is placed then the interpretation at 2-3 days later and again 1 week later. ...Read more

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Please help! What happens when you get an allergy test?

Please help! What happens when you get an allergy test?

Local skin reaction: Percutaneous skin testing involve placing a drop of the allergen on the skin and pricking it. Intradermal testing involves injecting a small amount under the skin and may be done if percutaneous testing is negative. One looks for redness and a raised area (wheal) on the skin. Systemic allergic reactions are extremely rare. An alternative is a blood test for specific ige (rast-type) test. ...Read more

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Please tell me recommendations for getting an allergy test?

Please tell me recommendations for getting an allergy test?

Identification: Allergy testing is indicated for the evaluation of patients who have year round nasal symptoms, asthma symptoms, severe bee sting reactions, symptoms after eating foods in an attempt to identify the specific allergen trigger so it can be avoided if possible. Also, allergy testing is necessary before considering allergy shots so the right allergens are included. ...Read more

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Can you let me know how many years is an allergy test good for?

Can you let me know how many years is an allergy test good for?

Depends: Since allergies can change over time--develop more or sometimes lose allergies, it can be helpful to retest. While there is no one single correct answer, I generally test if symptoms suggest a new allergy or there is a new exposure. There is no reason to repeatedly test a patient already on allergy shots. To follow kids with food allergies, testing once a year is standard to assess for tolerance. ...Read more

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I want to get an allergy test, but I have some questions about cost?

I want to get an allergy test, but I have some questions about cost?

Talk to Doctor: Cost for allergy testing will vary from doctor to doctor and from lab to lab. If cost is a major concern talk with the ordering allergist and really try to zero in on the absolute min number of test (s) needed to provide a treatment plan. ...Read more

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Please tell me how long it takes for to get results from an allergy test?

Depends: On the test. Skin tests are read and give an answer in about 15 minutes. Blood tests can take a few hours to a few days to come back. Patch testing for contact allergies (delayed) takes a few days. ...Read more

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How many years is an allergy test good for, before you have to recheck it?

How many years is an allergy test good for, before you have to recheck it?

Depends...: If you were skin tested (+) to environmental allergens as an adult, I usually do not recommend re-skin testing unless you change geographic location or you suspect a new allergy such as an animal from prolonged exposure. ...Read more

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What does it mean to get an allergy test? What happens during an allergy test?

What does it mean to get an allergy test? What happens during an allergy test?

Skin prick/lab test: To be checked for allergy, usually you have a skin prick test to introduce a small amount of the allergen into the superficial layer of your skin (often done on your back or forearm). Alternatively, sometimes a blood test is checked instead to check for allergic antibody specific to an allergen (example, milk or dog dander). ...Read more

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