food allergy testing


What is Food Allergy Testing?

Food allergy testing is a condition where a person is allergic to a particular food. Sometimes, some people know what food is causing them an allergy, but some who do not know have to visit a healthcare provider; who can help them with a proper diagnosis. This testing is conducted under two types: (i) Food allergy skin test and (ii) Blood test.

Food allergy hampers your immune system, leading to rashes and abdominal pain. In addition, these allergies can lead to life-threatening complications called anaphylactic shock. Once a person feels abnormality in the skin, they should visit a doctor.

Your health provider will ask specific questions regarding the whole scenario and how the allergy occurs.

  • What symptoms do you have after eating this food?
  • How long does the food take to show reactions on your skin?
  • Quantity of food you intake that causes such symptoms?
  • How often does such a reaction happen?
  • Do you find these allergic reactions to other food?

Apart from this, an allergist would like to know about their patient’s medical history. Your health care provider can ask many more questions based on their analysis, assumptions, and evaluation. After that, the allergist will prescribe you to go for a skin prick or a blood test.

Most common foods that can outgrow distinct allergies are:

  • Milk Food Allergy
  • Soy Food Allergy
  • Wheat Food Allergy
  • Eggs Food Allergy
  • Tree nuts such as almonds, walnuts, pecans, and cashews.
  • Fish Food Allergy
  • Shellfish Food Allergy
  • Peanuts Food Allergy

Food Intolerance Vs. Food Allergy

The food Intolerance test varies from the food allergy test. Many people get confused about these terms. A clarification may help distinguish between both in the right way.

Physical reactions from allergies are common, but they often occur due to food intolerance and not food allergies. When a person is affected by a food allergy, even a tiny quantity can target their immune system. The result could be dangerous and life-threatening. On the other hand, food intolerance or food sensitivity can affect your digestive system and cause bearable symptoms.

If a person is recurringly affected by food intolerance, even then, he can have a tiny piece of the offending food. For example: if a person is allergic to lactose, he can have lactose-free milk or pills for correct digestive sessions. Being your healthcare provider, Self Test Diagnostics has aligned some more examples for your better understanding. Let’s have a look.

Milk Allergy Test vs. Lactose Intolerance Test

Lactose intolerance or milk intolerance is different from milk allergy tests. Lactose intolerance is a carbohydrate intolerance caused by indigestion of lactose. Whereas in milk allergy, on consuming cow’s milk, your immune system reacts to proteins found in milk or other dairy products.

Egg Allergy Test vs. Egg Intolerance Test

Egg allergy tests and Egg intolerance tests occur with the same symptoms. The thin line between these two is that egg allergy happens due to protein intake, whereas egg intolerance could happen due to egg white, egg yolks, or both. It triggers gastrointestinal issues. With intolerance, multiple sensitivities can show up simultaneously, such as gluten, dairy, and soy allergies.

Gluten Allergy Test Vs. Gluten Intolerance Test

Gluten is a protein found in wheat, barley and rye. There is no concept of gluten allergy test that exists in the medical world. But it is often misled with the terms such as wheat allergy test and Celiac disease.

Those who are getting symptoms should contact Self-Test diagnostics immediately, the team of Phlebotomists will perform a gluten conditional test called celiac disease test. In this gluten allergy test, IgG antibodies activities are counted. Whereas, gluten intolerance test shows a condition of digestion caused due to gluten. Unfortunately, no tests are present for accurate diagnosis.


What are the types of Food allergies?

Milk Food Allergy:

Cow’s milk is allergic to most infants or children between the ages of 1-3. As per a static, about 2.5% of children are affected by this allergy. A milk allergy test can happen in both IgE and non-IgE forms. But, IgE milk allergy is the most common one and tends to be more severe than non-IgE one. If a child suffers from IgE milk allergy, the reaction will occur within 5-30 minutes and can have symptoms such as swelling, rashes, hives, vomiting, and sometimes anaphylaxis.

Children with non-IgE allergies have gut-based symptoms such as vomiting, constipation, diarrhea, and gut wall inflammation. It is known as food intolerance, which is hard to detect and diagnose. For gaining assurity you can visit Self-Test Diagnostics for a food sensitivity test.

In most cases, when a person suffers from a cow’s milk allergy, they must avoid including every milk product in their diet.

  • Milk powder
  • Cheese
  • Butter
  • Margarine
  • Yogurt
  • Cream
  • Ice cream

Egg Food Allergy:

Egg allergy is often found in children and is common in them. Most children who are allergic to eggs often tend to outgrow the allergy. However, an egg contains protein; still, one should avoid it from their diet if they’re allergic to it.

There might be a possibility that a person can be allergic to egg white but not to egg yolk and vice versa. As per a study, 68% of children are allergic to eggs and tend to outgrow their allergy by the time they are 16 years old. The symptoms can be:

  • Indigestion or stomach ache
  • Skin reactions such as hives or rash
  • Respiratory issues
  • Rarest of rare anaphylaxis

People are primarily allergic to egg white, but some can digest muffins and other eatables that include eggs. It is a condition of egg intolerance. However, people with egg allergies should avoid intake as it might cost them life-threatening risks.

To avoid the complexities, one should visit a doctor for a correct diagnosis.

Peanut Food Allergy:

Peanuts grow underground and come from the legume family. This breed also includes beans, soybeans, peas, and lentils. It is one of the most common food allergies. However, there is no risk of getting allergic to legumes other than soy.

A study shows that peanuts and peanut-contained food affect 1-3% of children and 2% of adults. Also, people can be allergic to tree nuts if they react to peanuts, such as almonds, cashew, pistachio, etc.

Things medical specialists check out before the treatment take place;

  • Tracing Past health history
  • Skin prick testing
  • Blood tests
  • Food challenging

Healthcare researchers are working on new treatments; some of which have already come live now. Hence, it is suggested to visit experts for diagnosis because supervision is better done by the professionals than at-home allergy treatments.

Soy Food Allergy:

Soybean also comes from the family of legumes. It is a common allergy found in babies and children. Soy allergy affects 0.5% of children up to 3 years. They outgrow this allergy with time.

Soybean has a protein content that can be allergic to certain children and adults. However, a study highlights that 70% of children outgrow this allergy: itchiness, tingly mouth, runny nose, rashes, and asthma are some of its symptoms.

Wheat Food Allergy:

It is uncommon to hear about wheat food allergies, but it is true. It is found in children, and with time they are hardcore allergic to wheat. At the age of 12, before entering adulthood, they must avoid wheat from their diet but note that it is not similar to celiac disease. You can contact us anytime for a wheat allergy test.

Tree Nut Food Allergy:

Nut food allergies can be found in children and adults. Tree nuts include walnut, almond, hazelnut, cashew, pistachio, and Brazil nuts.

Shellfish Food Allergy:

Shellfish food allergy affects the immune system of an adult. A study shows that 60% of people are allergic to Shellfish. It is bifurcated as crustacea that includes shrimp, crab, and lobsters. We are keen to clarify that people allergic to Shellfish can be allergic to other breeds. They can have their meal by avoiding the one they are allergic to. It is a lifelong allergy.

Fish Food Allergy:

Fish allergy is a lifelong allergy, similar to Shellfish food allergy, but they are unrelated in some aspects. About 40% of people have stated that they have been allergic to it in their adulthood. People can be allergic to Salmon, tuna, and halibut as these three showcase symptoms of allergies previously found in people.

So there is nothing wrong with stating that food associated with children’s allergies is milk, eggs, peanuts, and soy. In adults are fruits and vegetable pollen, peanuts and tree nuts, and fish and Shellfish.


Food Allergy Testing: Treatments and Diagnosis

There is a term called cross-reaction, which means if a person is suffering from some kind of allergies, they might suffer from something similar. For example, a person allergic to shrimp may be allergic to crab and lobster. Similarly, those who are allergic to peanuts may not necessarily be allergic to tree nuts but soy. However, they may have some issues with pecans, walnuts, almonds, and cashews.

Cross-reactivity is a critical and complex function in allergy testing. Those who want to understand the functioning must visit a board-certified Phlebotomist. Allergy occurrence is not always hereditary. It could be one of the reasons, but even if your healthcare provider asks you such questions, that doesn’t mean that it is genetic.

For Example: If your parents, siblings, or ancestors are allergic to peanuts does not prove that you will have the same issue. You can be allergic to some other food that your family is not.


How to get tested?

Food allergies react each time similarly to triggered food. In such cases, it becomes essential to get the right treatment. While diagnosing food allergies, your healthcare provider asks you some questions. After that, your doctor would prescribe you with some food allergy testing such as skin prick, blood test, or oral food challenge test. Although the food allergy test price is nominal but depending on the severity of the allergy it might vary.

Skin prick test for food allergies:

A skin prick test for food allergies provides more accurate results than a blood test. In this allergy test, a liquid substance called an allergen is placed on the forearm to identify the allergy. These allergens are formed from all the eatables that could cause allergies to a human being.

Suppose a person is allergic to shrimp; there are chances that they might be allergic to crab and lobster because they have similar protein content. Now your allergist conducts a test diagnosing food allergies by placing two to three substances or allergens on your forearm. For example, an allergy can be detected when a wheal formation or red bump occurs on your skin. It means that a person is allergic to that substance. The result of this test hardly took 20 minutes.

Blood test for food allergies:

A food allergy blood test is recommended when skin prick test results are unsatisfactory. Some studies stated that the results from the blood test are less accurate because the severity of the allergy is not mentioned. In this method, Immunoglobulin E (IgE) antibodies play a vital role in examining the allergy. The result of this food allergy testing will take a week’s time or more.

Once an IgE food allergy test is conducted, your healthcare provider or the phlebotomist can provide the correct diagnosis of your problems. It is doubtful if the report indicates a positive result, but the allergy is easily ruled out if it shows a negative outcome.

Oral food challenge test:

Experts sometimes recommend an oral food challenge allergy test that considerably provides the most accurate results. This test is always conducted under the strict supervision of your health provider. Performing it in a clinic is recommended because it is a riskier but more efficient method.

In this test, the allergists conduct their examination based on the oral intake of a person’s allergic food. Initially, they provide a tiny amount, but with time they increase the dosage to identify the cause of the allergy and its severity.

Some people react badly; proper medications and equipment should be available. Various types of allergies are performed in these tests, such as; lactose allergy test, nut allergy test, peanut butter allergy test, banana allergy test, etc.

How are food allergies treated?

Those who are allergic to specific food substances should immediately stop including them in their diet. It is the best approach to consider. In emergencies, a person can take medications such as epinephrine autoinjectors, in case of accidental ingestion and reaction. Although, after taking this medicine, immediately rush toward your healthcare provider and make a proper diagnosis.

Your healthcare provider may prescribe dosage to your allergic reaction in emergency cases such as

  • Epinephrine as a life-saving emergency medication that can reverse the function of anaphylaxis.
  • Antihistamines medications that reduces itching and congestion
  • Corticosteroids to reduce swelling

About Self-Test Diagnostics:

Self Test Diagnostics is one of the leading home service providing healthcare companies. We are a team of certified experts, doctors, allergists, and nurses. Our phlebotomists hope for your better health; however, you can always contact us whenever you feel low and need to diagnose a medical issue. At Self-Test Diagnostics, we have provided an online platform where you can book your slot by adding all the necessary information asked in the form. Our phlebotomist will visit the given destination and take the samples. You need not worry about anything. Later, we will send your report to our associated lab partners and provide you with results via email and SMS.

Frequently Asked Questions

What is a food allergy?

What is Food Intolerance?

Food intolerance is a condition that attacks your digestive system and it causes stomach-related problems. Food intolerance is not life-threatening.

What is food allergy testing cost?

What are the most common food allergens?

Although there are 170 types of food allergies, 8 or 9 foods are commonly hazardous to a lot of people in the USA. It includes; milk, eggs, peanuts, tree nuts, soy, wheat, fish, and Shellfish.

How many people are suffering from food allergies?

Almost 32 million people are detected with one or more food allergies, of which 6 million are children.

Is there any cure?

Yes, there is a cure if you know about the specific food causing the allergy. As your healthcare provider, we recommend you strictly remove it from your diet. If unsure, we can help you with our home services as a phlebotomist. You can contact us as we are open for 365 days.

Are you suffering from allergies? Don’t worry! We have solutions to every problem. Contact us now.

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