Established in 1987, DiagnosTechs was the first laboratory to introduce saliva hormone testing into routine clinical practice. In 1995, DiagnosTechs added saliva and stool-based gastrointestinal and food sensitivity testing, which expanded the level of service we provide to healthcare practitioners and their patients. Today, we operate throughout North America and globally, offer direct service through healthcare providers, and process more than 1.2 million tests annually. Our commitment to research and ongoing investment in cutting-edge technologies ensures that we will continue to lead the market in noninvasive diagnostic testing.

Clinical Approach

We pursue noninvasive testing because we believe that medical treatment should have as little impact on the patient as possible. Noninvasive sample collection is a hallmark of our testing and why we have chosen to focus almost exclusively on saliva and stool. The convenience of noninvasive sample collection relieves patients of the common anxiety over needles and conventional blood draws. Patients can collect their samples in the convenience of their own home and mail their samples straight to the laboratory for their provider to receive the results.

From our perspective, if a target substance can be identified and measured in saliva, there is no need for a blood test. Blood tests can be expensive, more labor intensive, inconvenient, and carry the risk of adverse health outcomes. We recommend choosing a noninvasive diagnostic test as a primary option.


DiagnosTechs is committed to using the most effective technology available and over the last several years has made significant investments in new laboratory technology to refine and improve our testing standards. We employ several gold standard mass spectrometry technologies for quantification of a variety of clinically important analytes. Our precision instrumentation includes gas and liquid chromatography tandem mass spectrometry (GC-MS/MS and LC-MS/MS) for sensitive and exact molecular identification, matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry for quick and comprehensive identification of microorganisms, and inductively coupled plasma mass spectrometry (ICP-MS/MS) for trace level analysis of heavy metals and other clinically relevant elements.

Clinical Validity

The ability for a laboratory to measure something is only important when there is a clinically relevant application. The philosophy of DiagnosTechs is to offer panels and tests that are highly reliable and have direct application to medical treatment. Our original testing panel, the Adrenal Stress Index (ASI), was the first to introduce cortisol testing by saliva to routine clinical practice. Today saliva is understood to be the Gold Standard for measuring unbound, active hormone levels in the human body. In addition to saliva, our stool testing uses state-of-the-art methodologies and equipment to analyze microbes, parasites, pathogens and inflammation markers, which can help diagnose a wide range of physical symptoms.

Joint commission

CLIA/Washington State department of health

Test Category