As a clinician measuring urine, serum and salivary hormone levels in my patients routinely, I’ve always got questions around which testing method is the best. Thus, I was excited to chat with Mark Newman and pick his brain on all things hormone testing. As he says, “I’m an inch wide and a mile deep. I’ve spent pretty much my whole career in measuring reproductive and adrenal hormones.” It’s true. As you’ll hear, Mark is a font of knowledge in this arena. In this interview, Mark covers the various specimen type and their respective utility and limitations, we then dive into a discussion around the unique characteristics of the DUTCH test….In brief, DUTCH is an easy 4 specimen urine test, collected over the course of a day, covering the bases of sex and adrenal hormones, plus metabolites (including 2-Methoxyestrone) and melatonin. It’s reflective of 24-hour output, but diurnal variation is captured as well-- thus great for cortisol.