Alberta Precision Laboratories

--- Query Results ---

Organization:

Alberta Precision Laboratories

Test Name/Synonym:

Cortisol, Urine, 24 Hour (Synonym: Corticosteroid, urine, cortisol urine, cortisol 24 hour urine, cortisol, 24 hour)

Ordering Alert:

For pediatric patients less than 18 years old, refer to Cortisol, urine, random

LABID (Connect Care):

LAB382

Specimen Type:

Urine

Primary Container:

24 HR URINE CONTAINER - PLAIN

Minimum Collection Volume:

5 mL

Specimen Collection Requirements:

No preservative

Test Resources:

General Laboratory Requisition – 21302

(Hand write test in OTHER TESTS NOT LISTED)

24 Hour Urine General Collection – Patient Instructions

Stability and Storage:

7 days at refrigerated temperature.
2 months at -20°C

Processing:

Calgary Zone: Mix well, record volume and start and end date and times, aliquot 30 mL into a STERILE CONTAINER, and refrigerate.

Edmonton Zone: Mix well, record volume and start and end date and times, aliquot 30 mL into a STERILE CONTAINER, and freeze.

Transportation:

For testing sent to Calgary Zone: Transport at refrigerated temperature
For testing sent to Edmonton Zone: Transport frozen

Method:

LC-MS/MS (Liquid Chromatography – Mass Spectrometry/Mass Spectrometry)

Testing Schedule:

Calgary Zone: Batched - 2 weeks
Edmonton Zone: Batched - 1 week

Reference Interval:

Sex	Age	Reference Interval	Cortisol/Creatinine Ratio (nmol cortisol/mmol creatinine
Sex	Age	Cortisol, Urine 24 Hour (nmol/d)	Cortisol/Creatinine Ratio (nmol cortisol/mmol creatinine
Male	0 up to 11 years	Comment appended: Reference range for prepubertal children is less than 25 nmol per 24 hours.	Comment appended: Reference range for prepubertal children is less than 8 nmol per mmol.
	11 years up to 18 years	No reference interval	2 – 14
	18 years up to unspecified	Less than 230	Not reported
Female	0 up to 10 years	Comment appended: Reference range for prepubertal children is less than 25 nmol per 24 hours.	Comment appended: Reference range for prepubertal children is less than 8 nmol per mmol.
	10 years up to 18 years	No reference interval	2 – 10
	18 years up to unspecified	Less than 160	Not reported
Unspecified or X*	Less than 10 years	Comment appended: Reference range for prepubertal children is less than 25 nmol per 24 hours.	Comment appended: Reference range for prepubertal children is less than 8 nmol per mmol.
	10 years up to 18 years	No reference interval	2 – 14 Comment appended: Patient identifies as gender X*, or gender is unknown. The reference interval provided encompasses male and female ranges. Results should be interpreted in the context of clinical history.
	18 years up to unspecified	Less than 230 Comment appended: Patient identifies as gender *X, or gender is unknown. The reference interval provided encompasses male and female ranges. Results should be interpreted in the context of clinical history.	Not reported

X*, non binary or prefer not to disclose

Performing Site:

Calgary Zone	Diagnostic and Scientific Centre
Edmonton Zone	University of Alberta Hospital

Additional Test Information:

Test is performed in Calgary Toxicology and Edmonton Special Chemistry.

Last Updated On:

Thursday, April 3, 2025