Practitioner Course

Functional Diagnostics Masterclass 1 – HPA and Sex Hormones

You will learn about the latest diagnostic testing methods and techniques. These are rapidly advancing and we need to keep up with them and how they apply to your patients. 

Online Course
8 lessons


12 Months OR Subscriber Pass


90 min/lesson
12 Hours total


Dr Bradley Bush
Dr Cheryl Burdette
Corene Humphreys

About this course

This Functional Diagnostics Masterclass is a deep, thorough course giving you the skills to accurately assess and monitor sex hormone and HPA axis function.

Good diagnostics skills set the path for best clinical care, and finding out exactly what’s wrong with your patient comes first.

The vast complexity of the human body means we need to get a clear view of what’s happening inside. Having a label for your patient’s disorder is not enough. Each patient is unique and they respond differently to care, often due to underlying hormone irregularities.

You will learn about the latest diagnostic testing methods and techniques. These are rapidly advancing and we need to keep up with them and how they apply to your patients. The rapid changes in laboratory methods alter what you can see and what each of this parameters means.

Importantly, you will be learning how the sex and HPA hormones interact with each other. Often, you will see a hormone panel with all parameters normal, yet your patient is exhibiting symptoms. All hormones function together and a working knowledge of these interactions is key to incisive diagnosis and precise patient care.

The hormonal interrelationships are the art and science of diagnostics. To suit all countries, reference ranges will be provided in both mass and molar concentrations.

Sex hormone and HPA regulation is the foundation of almost every condition you see. Accurate diagnostics leads to a better understanding of your patient’s problems and what the causes might be. When you have a clear idea of what is happening for your patient, you have a much clearer path forward for them. They will more often achieve reliably quicker improvements. Getting diagnostics right saves time, money, frustration, and loss of patients.

You will be learning:

  • Indications for each hormone and neurotransmitter assessment
  • Assay methods and techniques
  • Normal and optimal assay levels
  • Clinically relevant interrelationships between hormones
  • Which readings are relevant for specific conditions, and which not
  • The most important hormone ratios and how they affect physiology
What you receive:
  • Clear protocol explanations from some of the world's top practitioners
  • Clinical pearls for improved practice results
  • Access to your audio and video recordings via the App Store
  • A downloadable PDF of the presenter’s slides
  • Links to all referenced research papers and useful clinical handouts
  • Access to the community hub where you can get answers to your questions
  • A 30-day money back guarantee

From this course you will

  • Understand when the endocrine system requires investigative assessment
  • Know which assay is most relevant for each endocrine and sex hormone
  • Learn to accurately interpret and understand sex hormone and HPA assay results
  • Learn recognise abnormalities when parameters are within range
  • Understand which hormone ratios to specifically look for in complex assay panels

What's in this course

Your Presenters

Dr Bradley Bush

Dr Bush received his naturopathic doctor degree from National College of Naturopathic Medicine in 2000 and is currently co-owner and clinic director of Natural Medicine of Stillwater.

Dr Bush’s practice focus is fatigue, insomnia, mood disorders, and Lyme disease. Previously, Dr Bush was the co-founder and practitioner at New Hampshire Natural Health where he specialized in neuroendocrinology, intravenous therapies and lower Gi health for 8 years.

Dr Bush has over 14-years of industry business experience and is owner of Natural Health Insights, LLC providing consultant services to the natural products and laboratory testing industry. Dr Bush speaks nationally and regularly publishes on the topics of neuroimmunology, brain-gut connections, neuroendocrinology and Lyme disease.

Dr Bush sits on two non-profit boards; Naturopathic Education and Research Consortium and Compass Center for Health and is Co-Chairman for the American Association of Naturopathic Physician’s Curriculum Committee. He lives in Stillwater, MN with his naturopathic doctor wife and four daughters.

Dr Cheryl Burdette ND

Cheryl Burdette, ND is a Naturopathic Doctor. After graduating from Bastyr in 2001, she completed her residency at Cancer Treatment Centers of America and the Family Health and Wellness Center, one of three hospital-based residencies available for N.D.s in the country.

She is the director of a naturopathic residency program with a focus in nutritional biochemistry. She serves on an IRB board and reviews studies related to complementary and alternative therapies. Dr Burdette is one of the authors of the book, Laboratory Evaluations in Molecular Medicine and has published in many journals including Alternative Medicine Review and Clinical Chemistry. She has lectured internationally and believes that education is a critical component of empowering others on their journey to wellness.

She serves as a faculty member at University Bridgeport. She also teaches at the University of Miami, the first medical program to include integrative medicine in the core curriculum.

Corene Humphreys ND, BHSc

Corene is a registered naturopath from New Zealand with over 25 years’ experience in the medical industry. She received her qualifications from Auckland University of Technology (Microbiology), the South Pacific College of Natural Therapeutics Inc. (ND, Dip Med Herb, Dip Hom) and Charles Sturt University (Bachelor of Health Sciences).

Corene operated a multidisciplinary practice for 7 years specialising in Functional and Ayurvedic Medicine. She also served as a clinical consultant for a number of specialty diagnostic companies which lead her to immigrate to the US. During her role with Genova Diagnostics, Corene was instrumental in developing the Comprehensive Gastrointestinal Profile, along with other specialty GI and Metabolic Profiles. She also served as an educational resource for physicians, consulting to thousands of practitioners in North America as well as international clients.

Upon returning to New Zealand in 2005, Corene founded a research company, which provides consultancy support to conventional and compounding pharmaceutical companies as well as natural health businesses in New Zealand and abroad. In addition, her company (Nutritional Medicine Ltd) formulates evidence-based natural health products. She also lectures in Asia for antiaging clinics, specializing in bioidentical hormone therapy and tailored holistic health regimes.

For five years Corene was part of Wellpark College faculty where she wrote course content and presented Medical Microbiology and Functional Medicine. In 2013 and 2015, Corene authored chapters in the Textbook of Natural Medicine and Integrative Medicine on Intestinal Permeability and Insulin Resistance and the Metabolic Syndrome respectively. She regularly travels internationally attending medical and probiotic conferences to keep abreast of the latest research in the ever-advancing fields of Holistic and Functional Medicine.