Cortisol 4-Point Salivary Test

What This Test Is

A 4-point salivary cortisol test measures your free cortisol at four set times across one day to plot your diurnal curve. It evaluates how your HPA axis performs from morning to night and whether your cortisol rhythm supports focus, mood, metabolism, and sleep.

Typical collection times

• Immediately on waking or within 30 minutes
• Midday
• Late afternoon
• Before bed

Some panels include DHEA-S for extra context on anabolic balance.

Why It Matters

Cortisol should peak in the morning and gradually fall toward night. When the curve is off, people often report:

• Fatigue on waking, second winds late at night
• Brain fog, anxiety, irritability
• Cravings, central weight gain, blood sugar swings
• Poor exercise recovery, plateaued progress
• Perimenopausal symptoms that feel “worse under stress”
• Fragmented sleep or early morning awakenings

Correcting the rhythm often improves energy, mood, metabolic flexibility, and sleep quality within weeks.

Who This Is For

• Persistent fatigue or wired-and-tired patterns
• Stress, burnout, or overtraining concerns
• Sleep issues, particularly trouble winding down
• Weight loss resistance despite “doing everything right”
• Perimenopause, postpartum, or thyroid symptoms that fluctuate with stress

High performers seeking objective feedback on recovery

What You Learn

Your report shows:

• Morning peak for get-up-and-go
• Slope from noon to evening
• Bedtime level that sets the stage for sleep
• Pattern insights such as elevated-flat, high-night, low-all-day, or reversed curves

If included DHEA-S for resiliency and recovery capacity

How Testing Works

• Quick onboarding in clinic. You receive your kit and clear, step-by-step instructions.
• Collect at home on a typical day. No food, drink, brushing, nicotine, or gum 30 minutes before each sample.
• Avoid confounders when possible. Heavy exercise, acute illness, licorice, and steroid medications can skew results. Shift work and time-zone changes should be disclosed.
• Return samples the same day. Results are typically ready in about 1 to 2 weeks.

If you need a deeper dive into the cortisol awakening response, we can add a specialized multi-sample CAR assessment.

How We Use Your Data

Your diurnal curve becomes a practical plan that fits your life:

Lifestyle timing

• Morning light exposure, brief movement, and protein forward breakfasts to strengthen the a.m. peak
• Caffeine timing that supports focus without disrupting the slope
• Exercise type and timing matched to your pattern, for example strength in the morning for low peaks or parasympathetic work in the evening for high nights
• Evening wind-down, light hygiene, temperature, and breathwork to lower bedtime cortisol

Nutrition

• Macro balance and meal timing for glycemic stability
• Targeted electrolytes and hydration strategies
• If night elevations, earlier dinner and gentle carbs at night when appropriate

Supplements and therapeutics

• Adaptogens selected to pattern, for example rhodiola earlier in the day for flat-low curves or ashwagandha in the evening for high nights
• Magnesium glycinate, L-theanine, glycine, or phosphatidylserine based on findings
• Sleep protocols for onset vs maintenance insomnia
• When appropriate, precision therapies available in clinic that support stress regulation, focus, and sleep quality

You receive clear next steps for the next 8 to 12 weeks, then we recheck progress and decide whether to repeat testing.

Interpreting Common Patterns

• High morning, high night suggests stress load with inadequate wind-down. Focus on evening downshift, nervous system work, and sleep environment.
• Low morning, sluggish all day suggests blunted output. Build morning activation, protein and light, progressive training, and structured recovery.
• Normal morning, high night often tracks with late screens, late meals, or ruminating. Prioritize circadian habits and cognitive wind-down.
• Flat curve may reflect chronic stress, under-fueling, or overtraining. We address nutrition adequacy and recovery first.

Important clinical note: this is a functional assessment of rhythm, not a diagnostic test for adrenal insufficiency or Cushing’s. If red flags appear, we order appropriate serum testing and endocrine evaluation.

Preparation Checklist

• Choose a typical workday
• Sleep 7 to 9 hours the night before if possible
• Pause non-essential adaptogens 48 hours prior unless instructed otherwise
• Note all medications, particularly steroids, HRT, and thyroid therapy
• Avoid vigorous training on collection day
• No alcohol the night before