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Cortisol (Mass Concentration) in Saliva

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of cortisol, a stress hormone, found in your saliva. It helps assess how your body responds to stress over time.

Quick summary

["Salivary cortisol can reveal long-term stress levels that blood tests may miss."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
58666-9
Short code
Cortis 4 AM specimen Sal-mCnc
Synonyms
Cortis 4 AM specimen Sal-mCnc
Category
hormone
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test to evaluate chronic stress, adrenal gland function, or to monitor conditions like Cushing’s syndrome or Addison’s disease. It can also help diagnose or manage conditions affecting cortisol levels, such as depression or anxiety.

A small saliva sample is collected, typically in the morning when cortisol levels are naturally highest. The sample is then analyzed to determine cortisol concentration.

No special preparation is needed, but you may be advised to avoid caffeine or smoking for a few hours before collection to ensure accurate results. Avoid brushing your teeth right before sampling to prevent interference.

Results are not provided with specific reference ranges, as they depend on clinical context. Elevated levels may indicate chronic stress or adrenal dysfunction, while very low levels could suggest hormonal imbalances.

Elevated cortisol levels might suggest conditions like Cushing’s syndrome or excessive stress responses, while persistently low levels could indicate adrenal insufficiency or other hormonal disorders.

Common Conditions Monitored

This test is often used to monitor stress-related conditions, such as chronic stress, anxiety, or depression. It may also be part of a broader evaluation for hormonal disorders or adrenal dysfunction.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Salivary Cortisol

Frequently asked questions

How often should I get this test?
The frequency depends on your medical needs. Your healthcare provider will determine how often to repeat the test based on your symptoms, diagnosis, or treatment plan.
What are typical reference ranges for this test?
Salivary cortisol reference ranges vary by lab and clinical context. They are not standardized and are interpreted based on your individual health status and symptoms.
Can I take medications that affect cortisol levels before this test?
Yes, certain medications—such as steroids, antidepressants, or blood pressure medications—can influence cortisol levels. Always inform your provider about all medications you’re taking before the test.
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Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy