What is the reference range for Cortisol (30 minutes post-waking)?

The standard reference range for Cortisol (30 minutes post-waking) is Approximately 9–28 nmol/L in saliva; method- and time-specific.. Reference ranges vary by laboratory and assay platform — interpret in context of the issuing laboratory's stated range.

Which tests measure Cortisol (30 minutes post-waking)?

Cortisol (30 minutes post-waking) is measured in 1 test on BiomarkersLabs.com, including Advanced Adrenal Stress Test.

Biomarker Reference · CAR+30

What does the Cortisol (30 minutes post-waking) test measure?

Cortisol (30 minutes post-waking) (CAR+30) is a clinical biomarker used in adrenal-stress assessment. The cortisol awakening response is the rapid rise in cortisol 30–45 minutes after waking, typically an increase of 50–160% above the awakening value. It is measured in 1 laboratory test on BiomarkersLabs.com.

Reference Range: Approximately 9–28 nmol/L in saliva; method- and time-specific.
Units: nmol/L, µg/dL
Measured In: 1 test
Category: Adrenal

Functional medicine optimalAn increase of approximately 50–75% above awakening is often cited as 'healthy,' though reference data are heterogeneous and assay-dependent.

What is Cortisol (30 minutes post-waking)?

The cortisol awakening response is the rapid rise in cortisol 30–45 minutes after waking, typically an increase of 50–160% above the awakening value. It is thought to mobilise energy and cognitive resources for the day and is modulated by anticipatory stress, sleep quality, and HPA-axis reactivity.

Why is Cortisol (30 minutes post-waking) measured?

A blunted or absent rise may suggest HPA-axis hyporesponsiveness, chronic exhaustion, or altered circadian regulation; an exaggerated rise can reflect heightened anticipatory stress or anxiety. The CAR is variable between individuals and sensitive to collection-timing precision, so interpretation requires attention to protocol adherence.

Reference ranges

Standard reference: Approximately 9–28 nmol/L in saliva; method- and time-specific.
Functional medicine optimal: An increase of approximately 50–75% above awakening is often cited as 'healthy,' though reference data are heterogeneous and assay-dependent.
Units: nmol/L, µg/dL

Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.

Tests that measure Cortisol (30 minutes post-waking)

1 test on BiomarkersLabs.com include this biomarker.

BML-ADR-022Comprehensive

Advanced Adrenal Stress Test

Cortisol (30 minutes post-waking) reference range in this test: Approximately 9–28 nmol/L in saliva; method- and time-specific.

Related clinical conditions

Related Biomarkers

Frequently measured alongside

Cortisol (awakening)Cortisol-Aw2 tests Cortisol (midday)Cortisol-MD4 tests Cortisol (evening)Cortisol-PM5 tests Cortisol (before bed)Cortisol-HS1 test DehydroepiandrosteroneDHEA4 tests Cortisol-to-DHEA Ratio (derived)Cortisol:DHEA3 tests

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