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Also reported in: nmol/L
Cortisol is naturally low in the evening as part of the circadian rhythm — it should be much lower than morning levels to allow proper sleep onset. Normal evening cortisol supports good sleep quality.
Very low evening cortisol alongside low morning cortisol suggests noticeable adreduced kidney function or complete your brain–adrenal stress system suppression. This may also indicate very advanced adrenal exhaustion from chronic stress.
Seek medical evaluation for adreduced kidney function. This finding alongside low morning cortisol is a medical concern.
Evening Cortisol: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})Low evening cortisol can contribute to the well-known afternoon energy slump. In isolation, this may simply reflect your brain–adrenal stress system burnout from chronic stress, or it can be the early sign of adreduced kidney function.
Address chronic stress and sleep quality. Discuss with your doctor if morning cortisol is also low.
Evening Cortisol: {{value}} {{unit}} — below reference rangeBorderline low evening cortisol often reflects the natural daytime decline of cortisol, which may be accelerated by stress or poor sleep. Some afternoon tiredness is expected.
No urgent concern. Ensure adequate sleep, manage stress, and avoid prolonged fasting during the day.
Evening Cortisol: {{value}} {{unit}} — borderline lowCortisol is naturally low in the evening as part of the circadian rhythm — it should be much lower than morning levels to allow proper sleep onset. Normal evening cortisol supports good sleep quality.
No action needed. Good result.
Evening Cortisol: {{value}} {{unit}} — within reference range (should be low)Appropriately low evening cortisol supports the natural wind-down at the end of the day, allowing melatonin production and healthy sleep onset.
Excellent result. Continue wind-down routines like dimmed lights and avoiding screens before bed.
Evening Cortisol: {{value}} {{unit}} — optimalA borderline high evening cortisol means your stress hormone is not dropping as it should. This interferes with melatonin production, disrupts sleep quality, and keeps the body in a low-grade alert state.
Implement evening stress reduction: avoid screens 1–2 hours before bed, dim lights in the evening, practice relaxation techniques. Limit caffeine after noon.
Evening Cortisol: {{value}} {{unit}} — borderline highElevated evening cortisol prevents melatonin release, causing insomnia, light sleep, and non-restorative rest. Over time this disrupts metabolism, raises blood pressure, and impairs immune function. Chronic stress, trauma (PTSD), and Cushing's syndrome can cause this pattern.
Assess for Cushing's syndrome if morning cortisol is also high. Address sleep disorders, stress, and evening habits systematically. Discuss with your doctor.
Evening Cortisol: {{value}} {{unit}} — above reference rangeHigh evening cortisol that fails to fall is a classic diagnostic finding of Cushing's syndrome. Late-night elevated cortisol is more sensitive for Cushing's diagnosis than morning cortisol alone. This requires urgent endocrine evaluation.
See an hormone specialist urgently. Confirmatory tests (late-night salivary cortisol, 24-hour urine cortisol, dexamethasone suppression test) are needed.
Evening Cortisol: {{value}} {{unit}} — very highUpload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.