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Test Compendium

Test Name

  • CORTISOL, URINARY FREE 24 HR

Test Code

  • 6054

Test Synonym

  • Cortisol, Free, Urine, 24 Hr

Minimum Volume

  • 10 mL

Specimen Type

  • Urine

Primary Container

  • 24 Hour Urine Container, Container- Urine

Transport Temp

  • Refrigerated

TAT

  • 5 days

Specimen Requirements

  • State 24-hour volume.

Specimen Retention

  • Instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning) in a plastic bottle containing 1 g boric acid per liter of urine. Mix well. Screw the lid on securely. (It is acceptable to collect cortisol with a Hall preservative or without a preservative.)