Allergy Testing

Allergy Testing 
Immediate Allergies
Delayed Allergies
Dairy Allergy Testing
Allergy Symptoms Reference

Blood Testing

Normal vs. Healthy Ranges
Vitamin D Testing
Blood Testing

Digestive and Gastrointestinal Testing

Stool Blood Testing
Digestive Absorption Testing

Gluten Testing

Celiac Gluten Difference
Gluten Testing 
Celiac Disease Testing
Gluten-Free Diet

Hormone Testing

Male Hormone Testing
Female Hormone Testing

Neurotransmitter Testing

Neurotransmitter Testing

Toxic Metals Testing

Toxic Metals Testing



What’s Wrong With Normal Reference Ranges?

In the case of most blood tests and blood markers, the results listed on your report are compared to “Normal Reference Ranges”. Whoever reviews that report with you will then most likely tell you that as long as you are within the “Normal Reference Range” you are essentially healthy and have nothing to concern yourself with. The problem is that this is not always necessarily the case.

Despite what is often mistakenly believed, blood test results falling within so-called “Normal Reference Ranges” do not necessarily indicate that a person is indeed healthy, much less “not sick”.

Why? This is because of how Normal Reference Ranges are determined.

Each lab determines their own set of Normal Reference Rages or laboratory ranges.

To determine Normal Reference Ranges about 100 to 200 people are tested in a particular lab unregulated by any central agency. These results are then averaged to determine the “baseline” middle level of this “Normal Reference Range”. The most extreme deviations from that baseline level, both above and below it, determine the high and low extremes of that range – This gives the lab a bell-shaped curve with most of the population (unhealthy population) in the middle.

100 to 200 people determining the baseline nutrient levels for the entire population? Plus, the results are necessarily skewed from the start because most of these test subjects were being tested in the first place because they already had a health problem! Normal blood test scores only reveal how healthy or unhealthy you are in comparison to these people. Remember, the United States makes up only 5% of the World’s population, but we consume 72% of the world prescription medications, and we are ranked only 37th in longevity compared to all other countries in the world! Rates of diabetes, cancer, autoimmune disease, food allergies, heart disease and many other chronic diseases are on the rise as well!

That is why being “normal” is not enough. In fact, it’s not necessarily even normal! Just because these are common occurrences does not make them normal.

Take a look at the diagram below to learn more!


What’s Good About Healthy Reference Ranges?

Rather than being based on the levels culled from a select group of the population, Healthy Reference Ranges are based on the levels scientifically determined to promote optimal health and minimize risk of illness or disease. 

At Chicago Natural Health Care, our Functional Medicine Doctors will explain and go over your nutrition test results with you in your individualized nutrition counseling session. This includes both the “Normal Reference Ranges” as well as the Healthy or Optimal Reference Ranges – so you can get a more complete and reliable picture of your health.

Know Your Health

Schedule an appointment with one of our Functional Medicine Experts at Chicago Natural Health Care below or call us at 773.418.6877. We look forward to hearing from you!

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