The DUTCH Complete is the most advanced hormone test, offering an extensive profile of sex and adrenal hormones and melatonin, along with their metabolites, to identify symptoms of hormonal imbalances.  The DUTCH Complete is the most accurate test that provides a complete assessment of hormonal health.

a research-based clinical laboratory offering testing for metabolic, nutritional, and toxic factors in chronic illnesses such as autism, AD(H)D, fibromyalgia, and gastrointestinal and neuropsychiatric disorders. We provide a variety of tests including those for toxic chemical exposure, mold toxicity, metal toxicity, food allergies, essential fatty acids, glutathione levels, inflammation, and more

is the most advanced diagnostic tool available.

Micronutrient testing measures how micronutrients are actually functioning within your patients' white blood cells.  These tests allow nutritional assessment of your patients for a broad variety of clinical conditions, general wellness and the prevention of chronic diseases including arthritis, cancer, cardiovascular risk, diabetes, various immunological disorders and metabolic disorders. 

With 20 years of experience and results from over eight million tests, ZRT Laboratory is a recognized leader in innovative, safe, and meaningful hormone and wellness testing including hormone, heavy metals, neutrotransmitters, etc.