The ranges for cortisol shown in the Eli app are tailored based on the time of day selected during sample collection, since cortisol levels naturally fluctuate throughout the day.
Our reference ranges are based on peer-reviewed literature. Here's a simplified breakdown of the ranges we use:
30 minutes to 1 hour after waking: 1.7 – 8 ng/mL
Afternoon: <2 ng/mL
Evening: <1 ng/mL
These ranges are specific to salivary cortisol and reflect the body’s natural daily rhythm.