Cortisone (S2) - +30 Min.

Your stress hormone system has a distinctive morning signature. Within roughly 30 minutes of waking, free cortisol and its inactive partner cortisone climb sharply, then drift down through the day. This early-morning rise is one of the most replicable rhythms in human biology, and disruptions to it have been linked to chronic stress, mood disorders, and changes in how your adrenal glands respond to demand.

This test captures a snapshot of that surge by measuring salivary cortisone at the +30 minute mark. Cortisone is the inactive form your body makes from cortisol via an enzyme in your salivary glands and kidneys. Saliva captures only the free (biologically active) fraction, not the protein-bound pool that dominates a blood draw, which is why a small spit sample can tell you something a serum cortisol cannot.

What This Test Actually Captures

Cortisone in saliva closely tracks free cortisol because the salivary glands carry an enzyme called 11-beta-HSD2 that converts active cortisol into inactive cortisone. Measuring cortisone instead of cortisol can give a more stable read of free hormone activity in some situations, particularly for women on oral estrogens, where blood-based cortisol can be misleadingly high without the underlying biology actually changing.

The +30 minute timepoint sits at the peak of the awakening response, which is why it is sampled. It is not a measure of total daily output and it is not a measure of adrenal reserve in isolation. Its meaning comes from comparison: against your waking sample, against the rest of your daily curve, and against your own trend over time.

Why It Matters: Adrenal Function

Salivary cortisone has been studied as a way to detect adrenal insufficiency, the condition where the adrenal glands fail to produce enough cortisol. In a study of 187 healthy adults and patients evaluated for adrenal insufficiency, cortisone levels measured 30 minutes after a standardized stimulation test gave 91% sensitivity and 92% specificity at a cutoff of 32.8 nmol/L (a unit measuring very small concentrations in saliva). A more conservative threshold of 24.4 nmol/L caught 65 of every 100 cases while correctly clearing 97 of every 100 healthy people.

Those numbers come from a stimulation test (synthetic ACTH injection followed by timed sampling), not the at-home awakening sample this test uses. The biology is related but the context differs. What it tells you about the awakening sample is that salivary cortisone is a credible window into adrenal output, and persistently low values across multiple morning samples are a reason to investigate further.

Why It Matters: Chronic Stress and the HPA Axis

The hormone system that produces cortisol and cortisone is called the HPA (hypothalamus-pituitary-adrenal) axis. Acute stress reliably raises it. Chronic, long-running stress is messier: in long-standing anxiety disorders, repeated overactivation can flip into HPA desensitization, where output is blunted rather than high. People with long-term anxiety disorders have shown lower cortisol production than healthy controls in research settings.

This is why the awakening response matters as a pattern, not just a single number. A healthy curve shows a clear rise from waking to +30 minutes. A flattened or absent rise has been associated with chronic stress states, burnout-like presentations, and disrupted sleep. The +30 minute cortisone value is one anchor point in that pattern.

Reconciling High and Low Readings

It can feel paradoxical that both elevated and reduced morning cortisone could signal a stress problem. The framework that resolves this: the awakening response is not a simple good-number/bad-number marker. It is a phenotype indicator. Early-stage stress and acute mood disturbance often push it up. Long-running, unresolved stress can push it down as the system desensitizes. Two readings at opposite extremes can reflect different stages of the same underlying process. This is also why a single value is hard to act on without context.

Reference Ranges

Salivary cortisone at +30 minutes does not have universally agreed clinical cutpoints for screening healthy adults. The values below come from research on stimulation testing, not awakening response sampling, and are illustrative orientation only. Your lab will likely use its own population-derived range, and the units may differ. Compare your results within the same lab over time for a meaningful trend.

Source: Hellan et al., Journal of Clinical Endocrinology and Metabolism, 2024 (cosyntropin stimulation cohort, n=187). These cutpoints come from a stimulation protocol, not at-home awakening sampling, so they are orientation only.

When Results Can Be Misleading

• Sample contamination: brushing teeth, eating, drinking, or smoking within 30 to 60 minutes of collection can distort the value, sometimes by introducing blood from gum bleeding into the sample.
• Inconsistent waking time: the awakening response is timed from when you actually wake up. Sleeping in or being woken early shifts the entire curve, so collecting at the wrong moment relative to true wake time produces a misleading number.
• Acute illness or infection: short-term illness can transiently raise stress hormone output for days to weeks. A reading taken during or just after an illness may not reflect your usual baseline.
• Recent corticosteroid use: oral, inhaled, or topical steroid medications can suppress your HPA axis and lower morning cortisone for weeks after the last dose, mimicking adrenal insufficiency without the underlying disease.

Tracking Your Trend

Salivary cortisone shows real day-to-day variability. A study tracking salivary cortisol and cortisone over multiple days using mass spectrometry found that cortisone had less variability than cortisol but still moved meaningfully across mornings. One reading is a snapshot. A pattern emerges over several samples and several months.

A practical cadence: get a baseline. If you are addressing stress, sleep, or steroid recovery, retest in 3 to 6 months to see whether the pattern is shifting. If everything is stable and you are not making changes, an annual check is reasonable. Always pair this test with the rest of your daily curve (waking, +60 minutes, dinner, bedtime) rather than reading the +30 minute number in isolation.

What to Do With Abnormal Results

If your +30 minute cortisone is unusually low across multiple mornings, the next step is to look at the rest of your daily curve and consider companion testing: a morning serum cortisol, an ACTH (adrenocorticotropic hormone, the pituitary signal that drives cortisol release) level, and possibly a stimulation test ordered through an endocrinologist. A consistent low pattern combined with symptoms like deep fatigue, low blood pressure, or unexplained weight loss warrants prompt specialist evaluation.

If your +30 minute cortisone is unusually high or the rise is exaggerated, look at the broader pattern. A late-night sample matters here: persistently elevated late-night cortisol or cortisone is the screening pattern for hypercortisolism (Cushing's spectrum), which is investigated with a dexamethasone suppression test and a 24-hour urinary free cortisol. A flat curve, where the +30 minute value barely rises above the waking value, points toward chronic stress or sleep disruption rather than a primary adrenal problem and is best addressed with sleep, stress, and lifestyle work alongside repeat testing.