Laboratory Testing

Dr. Holly frequently uses laboratory testing to help her understand the cause of your symptoms.


Some of the tests that Dr. Holly may suggest are:

  • Thyroid Hormone Profile

  • Nutrient Level Testing (iron, vitamin B12, vitamin D, zinc)

  • Food Intolerance Testing (IgG/IgE/IgA food sensitivity testing)

  • Cardiovascular Profile 

  • Salivary Hormonal Testing (cortisol, DHEA, female & male hormones)

  • Blood Hormonal Testing (DHEA, insulin, male & female hormones)

  • Urinary DUTCH Hormonal Testing

  • Digestive Stool Analysis + Parasitology

  • Urinary Organic Acid Testing

  • SIBO Breath Testing

  • Stool Microbiology



© 2019 by Dr. Holly Johnston, ND. All Rights Reserved. Privacy Policy





Disclaimer: Health-related information contained in this website is intended to be general in nature, and should not be used as a substitute for a visit with a Naturopathic Doctor or other health-care provider.

Connect with me!

  • Facebook App Icon
  • Instagram App Icon
  • Twitter App Icon
  • Pinterest App Icon
413 Hibernia Street Stratford, ON | 519-271-0763