ZRT  Salivary Diurnal Cortisol

ZRT Salivary Diurnal Cortisol

Regular price $135.00 $0.00 Unit price per

This simple at home salivary test measures 4 cortisol samples. 

A diurnal cortisol curve is a commonly used tool for assessing adrenal hormone levels. 

The 4 salivary cortisol samples are typically collected at:

  • Waking
  • Before lunch
  • Before dinner
  • Before bed

The 4 samples are then charted on a 24 hour graph.

This graph shows your circadian cortisol pattern and helps to pinpoint issues with adrenal gland function.

The Cortisol level is normally at its highest 30 minutes after waking and decreases during the day, reaching its lowest point at bedtime. Those with adrenal gland dysfunction generally have irregularities in their diurnal cortisol curves. 

Modify Your Diurnal Cortisol  Status in 3 Easy Steps

1. Measure

Four simple salivary samples are all that’s needed. Mail in the sample - it’s that easy.


Once you get your results back, it can be optimized with simple dietary and lifestyle changes. 

3. Monitor

 Retest every 4 months to ensure your levels are optimal

Share this Product