Home/Measuring cortisol/Cortisol meter
The reference · 76,281 readings · 3,710 healthy adults · 10 published studies
Most tests read one moment. Cortisol moves all day — below is the rhythm, drawn from real readings, and the wearable built to read yours.
A cortisol meter is any device that measures the stress hormone cortisol. Saliva and blood-spot kits meter one sample at a time; the Auromone Curve is a wrist-worn meter that reads it continuously from a trace of sweat — the whole daily rhythm above, but yours. It is a general wellness device: it measures, it doesn't diagnose.
This is the curve a cortisol meter exists to reveal, plotted by clock time from the full reference. Filter it by sex and age — the shape holds remarkably well across all of them.
Sex
Age
Participants
3,710Readings
76,281Salivary-equivalent cortisol from 76,281 readings in 10 published observational studies of healthy adults (MIDUS 2, MIDUS 3, MIDUS Refresher, ULTRADIAN, Well Elderly 2, heiDATA, CARWatch, Bierstetel, Booij, Haase) — smoothed medians with percentile ribbons, thin bins hidden, aggregate statistics only. A population reference is a backdrop, not a target, and clock-time pooling blurs the awakening peak, which follows your wake time. Typical lab values: normal cortisol levels · sensing background: the science.
| Clock time | Median (nmol/L) | Middle 50% of readings |
|---|---|---|
| 6:00–6:30 (morning peak) | 17.4 | 11.0–26.1 |
| 9:00 | 13.8 | 8.8–21.3 |
| 12:00 | 7.4 | 4.5–12.2 |
| 18:00 | 2.7 | 1.8–4.3 |
| 1:00 (overnight trough) | 1.0 | 0.6–1.6 |
Values from the pooled reference (salivary-equivalent, all participants). They describe a population, not you — a healthy individual can sit well outside the middle 50% at any hour.
The chart above is 3,710 other people. The Auromone Curve reads cortisol from the sweat on your wrist, continuously, so the next curve you study can be yours.
Join the waitlistCortisol is not just "the stress hormone". It is a scheduling hormone: released in a strong daily rhythm, it touches nearly every system that decides how your day feels.
The sharp rise in the first 30–45 minutes after waking — the cortisol awakening response — is what gets you out of bed.
The awakening response → SleepCortisol should reach its lowest point in the middle of the night. A rhythm that stays high in the evening runs straight into your sleep.
Cortisol & sleep → Stress responseDeadlines, conflict, and hard efforts all arrive through the same axis. Cortisol is the hormonal half of how your body meets demand.
Cortisol & stress → Metabolism & weightCortisol mobilizes glucose and shapes appetite and fat storage, which is why it keeps coming up in conversations about weight.
Cortisol & weight → Mood & focusCortisol interacts with alertness and mood across the day. Whether "wired but tired" is really cortisol is a fair question — the evidence is more careful than the trend.
Cortisol & anxiety → Training & recoveryHard sessions raise cortisol and easy days should let it settle — the difference a training plan is quietly built on.
Cortisol & overtraining →Your skin releases a trace of sweat all the time, and that sweat carries free cortisol — the same bioactive fraction a saliva test measures. No needles, no samples to collect or mail.
The Curve holds a small sensor against the skin that reacts with the cortisol in that trace sweat and converts it into an electrical signal. The sensor is a swappable insert that lasts about 14 days and snaps in and out with magnets.
Individual readings stream to the companion app and build into your daily curve — the same shape as the chart above, but yours: your morning peak, your afternoon drift, your evening wind-down. That rhythm, tracked over weeks, is what single tests can't show. The Curve is a general wellness device: it measures cortisol so you can see your rhythm, and it does not diagnose, treat, or manage any condition.
| Spot test (saliva or blood-spot kit) | Continuous meter (Auromone Curve) | |
|---|---|---|
| What you get | Cortisol at the moments you sample | The whole daily curve, overnight included |
| Sampling | Collect, time, and often mail samples | None — reads trace sweat on the wrist |
| Timing sensitivity | High — a reading means little without knowing where in the rhythm it fell | Low — the rhythm itself is the result |
| Sees your awakening response | Only with strict timed sampling | Yes |
| Tracks change over weeks | Repeat purchases, repeat sampling | Continuous by design, 14-day sensors |
| Best for | A one-time check of a single value | Understanding and following your own rhythm |
Spot tests measure real cortisol and are useful for what they are built for. Full comparison of the at-home options, including kits: at-home cortisol tests. Neither approach replaces clinical testing — see the best time to test cortisol if a lab test is what you need.
Yes. Saliva and blood-spot kits meter cortisol one sample at a time, and continuous wearables read it all day. The Auromone Curve is a wrist-worn cortisol meter that reads the hormone from a trace of sweat continuously, so you see your rhythm rather than a single number.
Skin releases a tiny amount of sweat all the time, and that sweat carries free cortisol. The Auromone Curve holds a small electrochemical sensor against the skin that reacts to the cortisol in that trace sweat, converts it into an electrical signal, and sends readings to the companion app, where they build into your daily curve. The sensor is a 14-day swappable insert.
No. The Auromone Curve is a general wellness device under Health Canada and FDA guidance — it measures cortisol so you can see your own rhythm, and it does not detect, diagnose, or manage any condition. If you suspect a cortisol disorder, a clinician orders the appropriate lab tests.
It plots roughly 76,000 salivary-equivalent cortisol readings from 3,710 healthy adults across 10 published observational studies, by clock time. The line is the median and the shaded ribbons are the middle 50% and 80% of readings. You can filter it by sex and age. It is a population reference, not a target — healthy people vary widely.
The first 500 Curves are planned to ship in Q4 2026. Joining the waitlist is free, there is no deposit, and nothing is charged until your Curve ships.
The first 500 Curves ship in Q4 2026. Reserve yours — free, no deposit, charged only when it ships.
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