The ZRT Laboratory Blog

The ZRT Blog is an extensive resource for patients and health care providers searching for health and hormone testing information. Here, you can read about ZRT’s cutting edge research, advances in testing, wellness advice, and health industry highlights.



Dr. Kate Placzek

Kate Placzek, PhD, is a Senior Research Scientist at ZRT Laboratory.
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Recent Posts

Clinical Pearls - Getting the Most Out of Your Neurotransmitter Test

Posted by Dr. Kate Placzek on Friday, 29 September

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Learning how to use a new test can be overwhelming, especially when it goes back to neurology which you might not have thought of since medical school.

To assist health care providers in approaching neurotransmitter testing as a functional assessment, ZRT has outlined a series of key concepts below.

As with any functional test that measures physiological function, the challenge lies in the interpretation of subclinical levels of measured parameters. However, it is within those subclinical levels that the neurotransmitter test becomes a powerful tool to identify what is contributing to a specific patient's health issues and how to map toward a successful outcome based on an individual treatment plan.

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Estrogen: The Link Between Microbiome, Menopause & Metabolic Health

Posted by Dr. Kate Placzek on Saturday, 23 September

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The diversity of the microbiome has profound implications for metabolic health. The micro-organisms that we host in our gastrointestinal tract maintain our gut integrity, break down complex carbohydrates to improve energy extraction from food, produce vitamins and minerals, aid in digestion and absorption, ferment dietary fibers and protect us against pathogens. Maintaining a delicate balance in the diversity of the host-microbiome relationship is crucial for disease prevention and healthy aging. 

Studies on the microbiome are emerging as a new and exciting frontier of science. However, how the microbiome interacts with the endocrine system to modulate metabolic health is still one of the less explored avenues in microbiome research. This blog aims to shed light on the intertwined roles of gut microbiota and estrogen on metabolic health for women as they transition into menopause.

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Examining the "Warrior Gene" - MAOA & Aggression

Posted by Dr. Kate Placzek on Friday, 02 June

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Aggression is deeply rooted in our genetic foundation. Yet it is a double-edged sword: on one side, aggression communicates dominance, an exaggerated hostile manifestation and a willful attempt to harm. On the other, aggression is innate and essential to the human condition, even instrumental to our survival as a species for attainment of resources, determent of competitors, and organization of social hierarchies. 

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L-Theanine in Green Tea Stimulates Neurotransmitter Production & Reduces Anxiety

Posted by Dr. Kate Placzek on Friday, 19 May

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Capable of generating higher consciousness, the human brain is truly impressive in its complexity. The brain not only controls how we feel and what we think, but also manages all aspects of our health. To understand the fundamentals of a healthy brain, we ought to first take the time to understand how it works.  In so many ways, our understanding of brain function evolved from studies on electricity.  

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