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Cortisol in Saliva, Mass Concentration

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

This test measures cortisol levels in your saliva, a non-invasive way to assess your body’s cortisol production over time.

Quick summary

["Saliva cortisol helps track stress hormone levels without blood draws."]

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

Key facts at a glance

LOINC
2142-8
Short code
Cortis Sal-mCnc
Synonyms
Cortis 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 Is This Test Done?

Your healthcare provider may recommend this test to evaluate chronic stress, adrenal function, or circadian rhythm (daily hormone patterns). Saliva cortisol is often used to monitor conditions like Cushing’s syndrome or adrenal insufficiency without daily blood draws.

How Is It Done?

You’ll collect saliva samples (usually morning and/or evening) in a provided container. The test measures cortisol mass concentration, which reflects recent hormone levels from saliva fluid.

What Does It Mean?

Higher-than-expected levels may suggest overproduction of cortisol (e.g., from stress or Cushing’s syndrome). Lower-than-expected levels could indicate adrenal hormone deficiency or inadequate stress response.

What to Expect Before the Test

No special preparation is needed, but avoid smoking, caffeine, or eating/drinking immediately before collecting samples. Follow your provider’s instructions for timing (e.g., morning-only or multiple-day collections).

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Cortisol is a key stress hormone produced by the adrenal glands. Saliva cortisol testing helps diagnose conditions affecting cortisol secretion, such as adrenal disorders or chronic stress responses, without daily blood draws. It also supports circadian rhythm assessments by measuring natural hormone fluctuations.

Short name

Saliva Cortisol

Frequently asked questions

What does a high cortisol level in saliva mean?
A high cortisol level may indicate chronic stress, Cushing’s syndrome (excess cortisol production), or other adrenal-related conditions. Your provider will interpret results in context with your symptoms and medical history.
Can I take medications before collecting saliva samples?
Yes, but inform your provider about all medications, including over-the-counter drugs or supplements. Some medications (e.g., steroids) can affect cortisol levels, so timing may need adjustment.
How often should I collect saliva samples?
Follow your provider’s instructions—common protocols include morning-only, evening-only, or multiple-day collections (e.g., 24 hours). Morning samples often reflect natural circadian rhythms best.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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