UNDERSTANDING FOOD SENSITIVITY

What are Allergies and Sensitivities?

Allergies and sensitivities happen when our immune system become overly reactive to something in our environment. Once stimulated, our immune system initiates a series of reactions within, give rise an array of symptoms.

Common foods like diary, egg, gluten, soy and nuts as well as inhalants like pollens, animal dander and dust mites are the most common allergens.

Types of Food Reactions and their Mediators

Immediate Onset Reactions

[Allergy]

Delayed Onset Reactions

[Sensitivities]

Mediators IgE antibodies IgG antibodies
Reaction Within minutes Take hours or days to show up
Symptoms Short reaction time and dramatic symptoms
→ Easy to trace the culprits
Long-lasting and subtle symptoms
→ Hard to trace the offending foods

Who has Sensitivities?

45% of the population are estimated to be suffering from delayed food reaction.1  More than half (54.6%) of all U.S. citizens test positive to at least one allergen. Food allergies affect approximately 6% of young children and nearly 4% of adults in the U.S.2

 

The Relationship between Food Sensitivities and Health

Yet many food sensitivities are either neglected or untreated, manifest as common chronic symptoms that do not respond to conventional appraoches.

Hidden food reactions burden our immune system, overload defense and reduce repair capacity. Our immune system can become occupied by the reactions unnecessary to take place. This leaves our body more prone to chronic infections and susceptible to chronic, autoimmune or serious lifestyle diseases.

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1 Allergy UK
2 American Academy of Allergy, Asthma and Immunology

Symptoms Associated with Food Sensitivities

Skin

Eczema, Skin rashes, Urticaria, Dry skin, Psoriasis, Herpetiformis, Hair follicle inflammation

Digestive

Indigestion, Gas & Bloating, Diarrhea, Mouth sores, Constipation, Cramping pain, Hiccup, Vomiting, Gastroxia

COGNITIVE & PSYCHOLOGICAL

Anxiety, Learning disabilities, Hyperactivity, Autism, Depression, Food cravings, Poor concentration

MUSCLE & JOINTS

Joint Pain, Arthritis, Rheumatoid Arthritis, Muscle Aches

Ear & Eyes

Auditory vertigo, Ear effusion, Tinnitus, Itchy eyes

Cardiovascular

Hypertension, Migraines, Hypotension

Others

Chronic fatigue, Giddiness, Head swelling, Insomnia, Abnormal blood sugar level, Weight fluctuation, Water retention, Obesity, Overweight

Food Allergy? Food Sensitivity? Food Intolerance?

‘Food allergy’, ‘food sensitivity’ and ‘food intolerance’ are often used interchangeably to describe any unpleasant experience after eating the ‘wrong’ foods. It could be very confusing as they share many of the same signs and symptoms.

Food Allergies Food Sensitivities Intolerances
Involve immune system Yes Yes No3
Reaction Immediate
Within minutes
Delayed
Show up in hours or days
Delayed
Show up in hours or days
Terms in everyday Classic allergy
Acute allergy
True food allergy
Delayed food allergy
Intolerance
Always get mixed up with allergies and sensitivities Easy to trace the culprits
Symptoms Could look the same4

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3 The University of Nebraska-Lincoln
4 The University of Rochester and University of Chicago

Food Allergy Test - We care about

YOUR food intolerance

TESTING PRINCIPLE

The latest technologies in laboratory medicine are now able to precisely measure our immune system response to 96 foods, from small blood samples.

Our test will help you discover with ease what you could continue eating or avoid in your diet to minimize the adverse food reactions and relieve the overloading immune system.

Compare Different Tests in the Market

Test for food reaction can be categorized into two main types: Skin test and blood test.

Skin Test

Inject food proteins onto the skin and observe the redness and itchiness resulted, indicate the immediate (IgE) reaction

Blood Test

Analyze blood for food-specific antibody levels, can indicate both immediate (IgE) and delayed (IgG) reaction

If you are interested in more details of the comparison between different tests, please click the button below or go to our download centre.

TECHNOLOGY COMPETENCY

Reliable Technology that We Trust, Duplicate Runs for Ultimate Precision

We measure IgE and IgG antibodies in your blood, reveal the food reaction that may be responsible for your symptoms.

techComp

Our dedicated team of experienced scientists and technicians serve you with the latest technologies:

  • Fully automated robotic systems for our ELISA platform
  • Duplicate runs of each sample for ultimate precision
  • Superior specimen integrity with finger stick whole blood specimens
  • According to an independent Swedish research, HK BioTek employs the technology with highest accuracy and sensitivity. It is the only test ensuring delivery of consistent and reliable results.

How to Choose a Reliable Testing Service Provider?

According to Dr. Nina Pierpont (2009), a Doctor of Medical Science, a real gold standard of science should be involved both carefully observation and precise measurement, resulted in having same result after all; in other words – REPRODUCIBILITY. This means a sample is tested repeatedly, with its result validated for the highest accuracy.1

When choosing a test, you should enquire the laboratory about the reproducibility of the test you are going to take, so that you will know how consistent and reliable the test result is.

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1 Byrd, D. et al., 2000

THE TESTING PROCESS

AFC process

Testing at Clinics

Our service is carried by 450+ healthcare professionals in Hong Kong and Macau. Our staff could refer you to practitioners that suit you, according to the location, nature of practice and your insurance coverage.

  • Western medicine physicians (General Practice, Paediatric, Dermatology, ENT, etc)
  • Chinese Medicine Practitioners
  • Dietitians or Nutritionists
  • Naturopath or other holistic practitioners

If you wish to take the test with your family doctor, please let us know your name and the name of your doctors. We will contact them for you and make our test available to you at your greatest convenience.

Our email: info@hkbiotek.com and our contact number: +852 2763 1488.

 

Food Sensitivities Testing in Macau

We have a number of specialists in Macau carrying our service in Macau. Please feel free to contact us for referral and further information.

extensive test items

categories of test items

Food panels: For Delayed (IgG) or Immediate (IgE) reaction

96 Asian Foods

Common Asian fruits, vegetables and spices

96 Geneal Foods

A variety of dairy products and cereals

96 Japanese Foods

Covers ingredients commonly used in Japanese cuisine

96 Vegetarian Foods

Cover a wider variety of grains and legumes

64 Inhalants (IgE)

Focus on Immediate reaction; Cover plants, pollen, mold, indoor allergens such as house dust, dust mites, cat and dog allergens

16 Inhalants (IgG)

Focus on Delayed reaction; Include three major type of allergens: herbs, mold and indoor allergens

SAMPLE REPORT

USER TESTIMONIALS

Insomnia & Fatigue

Angela (28 year old)
“Thanks to HK BioTek. I now find myself free of the persistent fatigue and bouts of insomnia. At that time, I was studying my master degree and having a stressful job. I felt exhausted but couldn’t sleep at night. Had a number of tests ordered through my GP, but still clueless on what was happening. I really didn’t think this could happen on me when I was still under 30. These in fact turned out to be a problem with diary, egg and cherry. After a slight change in diet for 1 month, I felt the energy has come back and I am better than I was.”

Hyperactivity

Timothy (9 years old)
“Timothy suffered from Attention deficit hyperactivity disorder (ADHD) when he was just nine. The report of the test indicated that he was highly allergic towards daily products, egg, gluten and many fruits. We therefore follow the diet plan and the effect was almost instant. He has become much calmer, his temper improves a lot and so did his school work. I know several of parents having kids with autism/ADHD problem have had the tests done as well and their response was the same.”
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Asthma

Jamie (4 years old)
“My kid suffered from asthma since she was four. Followed up by several famous specialists in the town, her situation had not got better. I didn’t want to put her on inhalers or medicine for the rest of her life. I bought her to a clinic carrying HK BioTek’s IgG test. The report showed that she was immensely allergic to a variety of foods. We were not surprised and started avoiding the reactive food for her as advised by the nutritionist. After avoiding the reactive foods for 3 months, her condition was getting relatively stable. My family was very blessed to find the way to manage asthma, but will still watch Jamie’s diet very carefully.”

Chronic Diarrhea & Bloating

Chris (30 years old)
“On a daily basis, I would have bloating and diarrhea. It could be quite severe sometimes. Plus I was generally quite irritable due to the discomfort of my stomach. I did sought help from many doctors and went through many checkups. One of my doctor friends suggested me to try to test for food sensitivities that worked for himself in other symptoms. My results revealed that I was highly reactive to egg white and gluten. My symptoms improved significantly after 2 weeks. I am quite sure my problem are caused by these foods because when I ate them accidentally, the symptoms will most likely come back in the next one to 2 days.”

Chronic Infections

Lok (4 years old)
“Since Lok was 2 years old, he started having frequent episodes of various illnesses including viral fever, gastroenteritis, conjunctivitis, and rhinitis, recurrent attacks of bronchitis, urticaria and constipation. His father and me also felt weird about this because Lok used to be quite healthy. Until we took part in a health talk and talked with the doctor, he suggested that Lok should take an IgG test and the result showed that he is severely allergic to dairy products and soy. After removing these offending foods from his diet, Lok has gradually regained his health. As time passed by, he has become much stronger now”

Ezcema

Chloe (17 years old)
“I have to say that I was a little skeptical when firstly knew after this test. I have battled with eczema since I was few months old, tried almost every treatment available. The experience from all these years makes me feel that having dry, itchy and sensitive skin may be part of my personality. I was then found to be positive to some common foods. I saw an almost instant improvement in my symptoms.
I have already forgot why I would get myself tested, but it is definitely bliss to be symptom free, and I have never imagined this would work for my skin.”

Chronic Cough & Runny Nose in the morning

Helen (48 years old)
“I came for testing after suffering with a tickly cough which both many doctors and I have been unable to find a cause for. This test was a bit of a last ditch attempt for the cause. My result came back to show I have a strong reaction to dairy, shrimp, corn and sesame. I was also moderately reactive to egg white. By following the customized rotation diet, the symptom improved dramatically. Surprisingly, I used to sneeze a lot after waking up, now it’s almost gone.”

FREQUENTLY ASKED QUESTIONS

WHY FOOD ANTIBODIES TEST?

1. What are the strengths of our AFC test?

  • Semi-quantitative analysis of IgE and IgG antibodies through fully automated Robotic ELISA procedure
  • Comprehensive test items
  • Only few drops of blood for delayed onset test
  • U.S. technology
  • Customized rotational diet plan go along with report

2. Could we know more about the specificity and accuracy of the Aller Food Check test ?

Our AFC test utilizes the fully automated robotic ELISA system. It undergoes stringent biochemical process detect antibodies in the blood, which interprets your immune system’s response to food. Our test gives you the assurance of quality and reliability as all tests are completed under US BioTek Laboratories’ facilities. Each sample is run twice to ensure consistent results. Our laboratory is an independent clinical laboratory approved by CLIA (US Clinical Laboratory Improvement Amendments) accredited by COLA (US Commission on Office Laboratory Accreditation). The laboratory is also licensed by the State of Washington for performing testing worldwide.

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3. How can you ensure the blood collected in the strips will not be contaminated during transit?

The blood strip will be air dried for 45 minutes in room temperature before sending out. A dried blood sample provides no medium for bacteria to attack. Using our blood strips is a proprietary method proven to ensure the blood sample to be stable for at least 3 weeks under room temperature.

Comparison studies have been done to prove that results from blood strips and serum showed no discrepancy. Therefore, sampling with strips are as effective as obtaining serum from blood drawing.


 

ABOUT APPOINTMENT

1. How do I go about the AFC testing?

You could:

  • Make an appointment for blood sampling at our office or our sampling outlets all over Hong Kong;
  • Purchase the test kit from us, collect the blood sample on your own, then return it back to us;
  • Do it at the clinic of your family doctor or doctors carrying our tests

Our Office Hour: 10am-7pm (Mon-Fri); 9am-5pm (Sat); Closed on Sun & Public Holidays

It will take 10 – 20 days to get your report ready.


2. How much blood is needed for the food antibodies test?

For testing the delayed onset reaction, only few drops of blood is needed. For the immediate onset reaction, you will be arranged to undergo a blood drawing at a lab in your preferred location. The exact amount of blood needed depends on the type of test you enrolled.


 

TESTING PRECAUTIONS

1. Should I be fasting before my blood sampling ?

No fasting is required. This test is a semi-quantitative analysis of the antibodies in our body, and it is produced while the foods being taken prior to the test.


2. Is the AFC test suitable for all ages ?

Adults and children can take the test. In general, infant after 6 months starts to produce its own antibodies. Thus, kids age after 6 months and start eating solid foods can take the test.


3. Should I take the test if I am pregnant ?

One of the reasons for developing adverse food reaction is genetic predisposition. If a pregnant lady is allergic to some foods and wasn’t aware of it, the IgG and IgE antibodies produced would transfer to the baby. Medical professionals have suggested that pregnant women could consider testing when necessary so as to prevent baby from allergies and sensitivities.


4. Should I be eating differently before taking this test?

Any test for IgG is able to reflect your diet in past three months while that of IgE reveals your reaction in 48 hours. The beauty of the test is to tell whether the foods you eat may make your sick, therefore we recommend test clients to eat normally prior to testing, only this way, the test can reveal more information from your way of eating.

However, some of the test clients may consider to consume foods that they seldom eat before taking our test. You could choose to do this, and we recommend you to consume these foods at least for a week before enrolling to our test. This will greatly enhance the chance of detecting those “reactive” foods. However, if you have history of anaphylaxis or severe allergic reaction, you should avoid eating these foods as second exposure can prove fatal. Please consult your physician if you have any questions concerning this test.


5. Can I have this test done if I am taking Chinese or Western medicine?

In general, the major concern is steroidal drugs, e.g. cortisone, because it can suppress the immune system, and thus may reduce the antibodies present, causing a “false negative” report. Thus it is advisable to stop taking the steroidal drug for at least 3 weeks before taking the test. Tropical steroid is not part of the concerns.


6. Do I need a doctor’s prescription to have the AFC test done?

Any individual can order any tests as his or her health information but not for diagnosis. A doctor’s prescription is not required.


 

ABOUT TEST RESULT

1. What information does the report provide?

Aller-Food Check result will be shown in bar charts, according the food categories. The classes of 0 to VI denotes the level of antibodies detected through ELISA procedure.

For IgG and IgA:

– Abstain from the reactive foods based on the allergic level.
– Rotate the foods that are in the low or no-reaction category.
Level O: Foods in this column can be eaten freely.
Level I to II: Low amount of antibodies are present against specific food. For the first 3-month you may rotate these foods every 7 days, then rotate these foods every 4 days afterwards.
Level III: Moderate amount of antibodies are present against these specific foods. You should avoid these foods for a 3-month period, and rotate these foods every 4 days afterwards.
Level IV to VI: There are elevated antibodies in the body against these specific foods. You should avoid these foods for at least 6-9 months, depending on your health conditions, and re-introduce carefully later.

For IgE:

Items with positive results should be avoided in your lifetime.

The reports will come with a rotational diet guideline and a wallet card lists out the reactive foods (when there is any result greater than level III), as well as information sheets and rotational diet booklets for you to make good use of the test result.


2. How do we go about report interpretation ?

You will receive the test result via email and be interpreted by our Nutrition consultants via phone or face-to-face consultation. Hard copies of the report as well as other supporting material will be handed to you during consultation or posted to you. You can always reach our customer hotline (852) 2763 1488 when necessary.


3. I am found to be IgG positive to cow’s milk and egg. Would I be nutritionally deficient if I completely avoid these protein rich foods?

You may follow the customized rotation diet reference to avoid the offending foods. Remember that there are always substitutes for most of the offending foods. For example, if you are allergic to cow’s milk, most nutritionists will suggest soy milk, rice milk or almond milk to be the best available alternatives, and you can obtain calcium and protein from other food sources as well.


4. Should I retest?

You will have a 6 to 9 month of food elimination process after identifying your offending foods. A follow up test would be necessary if you would like to reconfirm whether you are still reactive to the offending foods, and a retest would also be able to identify if you may experience new offending items when you are in the process of elimination.


5. How long does it take to improve my symptoms after the test ?

In most cases, if your condition is due to allergies or sensitivities to food or inhalant, you should notice improvement of your symptoms in a couple of weeks of avoidance.

If your symptoms persist, you should consider other factors could play a role in affecting your current health conditions. After all, avoiding offending foods is one of the factors that you could start with or control, but it is not the magic bullet for all health issues.

GREAT, LET’S BOOK A TEST

TEST APPOINTMENT