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Cortisol/Cortisone, Free, 24 Hour, Urine

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Reference Values Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.


0-2 years: not established

3-8 years: 1.4-20 mcg/24 hours

9-12 years: 2.6-37 mcg/24 hours

13-17 years: 4.0-56 mcg/24 hours

> or =18 years: 3.5-45 mcg/24 hours



0-2 years: not established

3-8 years: 5.5-41 mcg/24 hours

9-12 years: 9.9-73 mcg/24 hours

13-17 years: 15-108 mcg/24 hours

> or =18 years: 17-129 mcg/24 hours


Use the factors below to convert each analyte from mcg/24 hours to nmol/24 hours:


Conversion factors

Cortisol: mcg/24 hours x 2.76=nmol/24 hours (molecular weight=362.5)

Cortisone: mcg/24 hours x 2.78=nmol/24 hours (molecular weight=360)