Case Studies with Dr. Kate


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.




Case Study #1: Pre-Menopausal Female

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 6


Case Study #6: Postmenopausal Female 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.


mature woman case study 6


Case Study #7: Veteran with PTSD

Dr. Placzek reviews “Jack,” who is a 48-year-old veteran suffering from PTSD. Jack is struggling with depression and sleep problems. He has many severe symptoms.



Neurotransmitter Case Study Premenopausal Women with Anxiety and Sleep Disturbances

Case Study #8: Premenopausal Female with Anxiety

Dr. Placzek reviews “Natalie”, who is a 33-year-old pre-menopausal women using oral contraceptives. Natalie is struggling with anxiety and sleep disturbances.



Neurotransmitter Case Study Pre-menopausal women with anxiety, stress, and sleep disturbances

Case Study #9: Premenopausal Female with Stress

Dr. McAllister reviews "Zoey", who is a 21-year-old pre-menopausal women experiencing anxiety, nervousness, sleep disturbances, and stress. Zoey is also on the Mirena IUD.



Male with Suspected Obstructive Sleep Apnea


Case Study #10: Male with Suspected Obstructive Sleep Apnea

Dr. Placzek reviews “Chris”, who is a 37-year-old man experiencing severe fatigue, constipation, and feeling burned out. Chris is not currently taking any therapies. 




ZRT's Neurotransmitter Expert



Kate 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.



Dr. Kate's Articles: 

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