Hormone Health Hub: Expert Insights on Testing, Balance & Better Living — catecholamine testing

Neurotransmitters play a vital role in regulating mood, sleep, energy, focus, and overall mental wellbeing — yet imbalances often go undetected. This article explores how dried-urine neurotransmitter testing provides an objective, science-based way to identify chemical patterns behind symptoms such as anxiety, depression, fatigue, insomnia, ADHD, and chronic stress. By analysing key markers including serotonin, dopamine, GABA, glutamate, histamine, and the kynurenine pathway, clinicians can create highly personalised treatment plans that target each individual’s unique neurochemical profile. Discover how this innovative testing method offers a deeper understanding of mind-body chemistry and a more precise path to restoring balance and emotional health.

Explore the powerful connection between cortisol, melatonin, inflammation and circadian rhythms. Learn how disrupted hormone patterns may contribute to fatigue, insomnia, stress, cardiovascular disease, diabetes, depression and even cancer risk. This article reviews the latest insights from ZRT Laboratory doctors on hormone testing, sleep biology, stress physiology and the importance of maintaining healthy daily hormone rhythms for long-term wellness.

Dried urine testing is rapidly becoming the preferred method for neurotransmitter and hormone assessment — but collection timing is everything. In this clinical overview, Dr. Kate Placzek of ZRT Laboratory explains why a single morning urine sample cannot substitute for a 4-time-point collection, how neurotransmitters like epinephrine and norepinephrine follow distinct diurnal rhythms, and why interchanging the first and second morning voids can produce grossly inaccurate results.

Norepinephrine and epinephrine follow a distinct diurnal rhythm — rising through the morning, peaking in the afternoon, and falling at night. When this pattern is disrupted by chronic stress, the consequences ripple through every hormonal system in the body. Learn how the stress response works and how dried urine testing can reveal imbalances.