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Dr. Andrea Gruszecki, ND

Dr. Andrea Gruszecki received her Doctorate in Naturopathy from Southwest College of Naturopathic Medicine (SWCNM). As a practicing ND, she worked with a variety of patients and has pursued additional studies to ensure the skills necessary to treat the "whole person" using nutrition, physical therapies, education, and mind-body therapies. Her experiences in private practice evolved into an inclusive model of medicine for use by conventional and CAM providers, designed to allow cross-specialty communication among health care providers. She has presented continuing medical education on a variety of subjects, including the gut microbiome, methylation, neurotransmitters, and toxic exposures. Dr. Gruszecki serves a clinical consultant for US BioTek Laboratories, writing, researching, and presenting interpretations and information on a variety of health-related subjects. She draws upon years of experience and the latest research during her consultations and is often able to provide novel insights for clinicians.

4 min read

Thyroid, Depression, and...Dementia? Why The Connection Is Important.

Many clinicians are familiar with the link between depression and low thyroid (hypothyroid) function. Clinicians may also be familiar with the known association between dementia and depression later in life. A new study has uncovered a potential...

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4 min read

Top 3 Considerations During Pediatric Ig Antibody Testing

While the pitter-patter of little feet in the office can be a joy, clinicians must remember that pediatric patients may differ from adult patients in many regards. Differences may include a higher ratio of IgE true allergy, lower infant levels of IgG4,...

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5 min read

Men and COVID-19: Autoimmunity, OH MY!

As COVID-19 social distancing practices are relaxed, new COVID-19 infections continue to be reported. There have been several disturbing reports regarding long-term post-infection consequences, including new evidence that COVID-19 infections may...

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4 min read

Oral Allergy Syndrome: Unraveling IgE Allergy Cross-Reactivity

Oral Allergy Syndrome (OAS), also called pollen-food allergy syndrome (PFAS), is an odd phenomenon. OAS patients present with local IgE-mediated allergic reactions to raw fruits and vegetables. The symptoms of OAS include itchy mouth, scratchy throat, or...

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3 min read

The Limitations of At-Home COVID-19 Testing

The currently available at-home COVID-19 antigen tests may or may not provide accurate information if your patient has the Omicron variant, if they are testing outside the window of opportunity, or if the sample collection is insufficient. So, why bother...

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5 min read

Which is Superior, COVID-19 Antibody Testing, or T-Cell Testing?

As winter approaches, monitoring the antibody status of patients who have been vaccinated or exposed to the COVID-19 virus is imperative to patients’ health. Luckily, multiple studies have been completed providing guidance as to which testing option is...

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5 min read

COVID-19 antibody assessment and delta-variant risks

With an increasing percentage of the population at least one-dose vaccinated, the expected decline in COVID-19 infections has not happened, primarily due to the presence of the COVID-19 delta variant in North America. What has changed is who gets...

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4 min read

Likely reasons for unlikely low IgG results

There are many different reasons for unexpected IgG results. Pre-analytical errors, which are outside of laboratory control, are responsible for the majority of our unexpected laboratory results.

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5 min read

The difference between Celiac disease & non-Celiac gluten sensitivity

The scientific community is finally documenting what Naturopathic physicians and functional medicine practitioners have known for years: there are three different ways that wheat and wheat proteins can affect the human body. Celiac disease, wheat...

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4 min read

New Insights– Updates to our Organic Acids Profile and Guide

Organic Acids tests are great for providing an individualized overview of a patient’s health but can be confusing and difficult for the uninitiated to interpret. US BioTek understands this and has created a new, comprehensive, evidence-based...

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4 min read

Don’t Guess, Assess! Using S-RBD Antibody Tests to Evaluate COVID-19 Immune & Vaccine Responses.

The development of successful COVID-19 vaccines is the beginning of the end of the COVID-19 pandemic. As more and more individuals in the general population get vaccinated, “herd immunity” is developed, and herd immunity can help protect even those who...

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2 min read

Hearts and flowers in February: Where does total IgE fit in?

February is American Heart Month and is the perfect opportunity to consider our cardiovascular health. One measure of cardiovascular risk is total IgE. Several human studies have documented higher total IgE as a cardiovascular risk factor after adjusting...

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2 min read

What Type of Diet Works Best for Your New Year's Resolution?

There is no one “perfect” diet for everyone. After the dietary indulgence that often accompanies the December holidays, many of our patients will resolve to “get healthy” for their New Year’s resolution. A quick internet search will provide a dizzying...

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3 min read

The Pitfalls of Rapid COVID-19 Testing

It seems that almost every attempt to “open up” out of lockdown and get things back to normal is thwarted by a new spike in COVID-19 cases. With the coming holidays, getting accurate information about COVID-19 status for travel purposes or family visits...

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3 min read

Hidden foods and chronic symptoms – what’s hiding in your holiday treats?

‘Tis the season for dietary indiscretion. Between Halloween leftovers, Mom’s famous Thanksgiving sweet potato casserole, and traditional December holiday treats, there are many opportunities for unexpected exposures to harmful food antigens….

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6 min read

Does Smog = Sensitivity? Pollens, Pollution, and Aeroallergen Reactivity

Polluted air irritates lung tissue and disrupts the lung mucosal barrier. Much of the Pacific coast of the United States is currently impacted by the smoke and destruction of wildfires, and that smoke will eventually circle the earth. While the effects...

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6 min read

Summer Allergies in a Changing Climate

Anyone with seasonal pollen allergies to grasses greets the summer season with sneezing, itching, watery eyes, and other symptoms. Some may develop asthma exacerbations or seasonal gastrointestinal symptoms due to inhaled and swallowed pollens in the...

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5 min read

4 Things Clinicians Need to Know About Candida Immunoglobulin (Ig) Screening

In September 2019 US Biotek Laboratories added an Ig Candida screen to all IgG, IgG4, and IgA food sensitivity testing. The Candida screen was added to provide additional clinical utility to our food sensitivity testing, because the presence of Candida...

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5 min read

Viral Exposures and Asthma Exacerbation

As the COVID-19 Coronavirus continues to spread, the CDC has identified certain groups that are at a higher risk for severe illness. Patients with moderate to severe asthma are one of the high-risk groups, and these individuals are encouraged to take...

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