Advantages

  • Saliva testing, unlike serum tests, measures the bioavailable (“free”) levels of steroid hormones, correlating with symptomatology and potential deficiency
  • Samples are collected by the patient at home, allowing convenient timing of collection especially for cortisol, which must be measured at specific times of the day or night
  • Convenience of collection allows frequent sampling, e.g., during a menstrual cycle to determine fertility problems
  • Hormone levels can be assessed during topical hormone supplementation
  • Saliva collection avoids the stress of a blood draw, which can affect levels of cortisol
  • Hormones are stable in saliva at room temperature for up to 2 weeks, allowing for worldwide shipment and convenient mailing of samples for testing
  • Saliva testing is less expensive than conventional serum testing

Clinical Utility

Saliva testing can help providers:

  • Identify hormone imbalances prior to the appearance of symptoms or disease
  • Identify specific hormone imbalances associated with symptoms
  • Establish hormone baselines prior to surgery or beginning therapy
  • Monitor hormone levels while supplementing, allowing for individualized hormone dosing
  • Track patient symptoms and hormone levels using ZRT’s comparative history reports provided with follow-up testing