Symptoms of a dysregulated nervous system can be challenging to assess, but ZRT's neurotransmitter testing can help clarify the root issues.

Learn about patients who have achieved better health through neurotransmitter testing and practitioner-guided treatments.

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Dr. Kate reviews “Rachel,” who is a 34-year-old woman with regular cycles and severe symptoms that include estrogen dominance and mood problems. Rachel is currently not on any hormone therapy. 



Case Study #2: "Burned Out" Male

Dr. Kate reviews “James,” who is a 48-year-old man with moderate to severe symptoms that include low cortisol and low androgens. James' testosterone is normal. He is on several supplement therapies.


Case Study #3: A Closer Look at MAO

Dr. Kate reviews “Alexis,” who is a 41-year-old woman with a lot of mood symptoms. Alexis is on oral progesterone twice a day.



Case Study #4: Child with ADHD

Dr. Kate reviews “Anthony,” who is a 10-year-old boy with ADHD. Anthony has ADHD and is on several therapies.



Case Study #5: Postmenopausal Female with Insomnia

Guest Presenter Dr. Smith reviews “Julia,” who is a 51-year-old postmenopausal woman with sleep disturbances. She has tried many different supplements.

mature woman case study 6Case Study #6: Postmenopausal Woman with Breast Cancer

Dr. Placzek reviews “Loretta,” who is a 62-year-old postmenopausal woman. Loretta has breast cancer and struggles with depression, anxiety, and stress.


ZRT's Neurotransmitter Expert

kate-864228-editedKate Placzek, PhD, is a Senior Research Scientist at ZRT Laboratory. 

She received her doctorate from Purdue University in Medicinal Chemistry and Molecular Pharmacology; and performed her postdoctoral studies at Oregon Health and Science University.

Dr. Placzek leads the neurotransmitter group at ZRT and narrates these neurotransmitter case studies. Additionally, she regularly lectures for groups such as the A4M at industry conferences.

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