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Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed
Days of the week the test is performed.
Sun-Sat
Reported
Expected turnaround time for a result, beginning when ARUP has received the specimen.
1-5 days
Reference Interval
Normal range/expected value(s) for a specific disease state. May also include abnormal ranges.
Test Number
Components
Reference Interval
Creatinine, Urine - per 24h
Age
Male (mg/d)
Female (mg/d)
3-8 years
140-700
140-700
9-12 years
300-1300
300-1300
13-17 years
500-2300
400-1600
18-50 years
1000-2500
700-1600
51-80 years
800-2100
500-1400
81 years and older
600-2000
400-1300
Cortisol, Urine Free - ratio to CRT
Age
Male (ug/g CRT)
Female (ug/g CRT)
Prepubertal
Less than 25
Less than 25
18 years and older
Less than 32
Less than 24
Pregnancy
Not Applicable
Less than 59
Cortisol, Urine Free - per 24h
Age
Male (ug/24 h)
Female (ug/24 h)
3-8 years
Less than or equal to 18
Less than or equal to 18
9-12 years
Less than or equal to 37
Less than or equal to 37
13-17 years
Less than or equal to 56
Less than or equal to 56
18 years and older
Less than or equal to 60
Less than or equal to 45
Interpretive Data
May include disease information, patient result explanation, recommendations, or details of testing.
Per 24h calculations are provided to aid interpretation for collections with a duration of 24 hours and an average daily urine volume. For specimens with notable deviations in collection time or volume, ratios of analytes to a corresponding urine creatinine concentration may assist in result interpretation.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Compliance Category
Laboratory Developed Test (LDT)
Note
Additional information related to the test.
Reference intervals based on literature from Taylor R.L. et al., Validation of a High-Throughput Liquid Chromatography-Tandem Mass Spectrometry Method for Urine Cortisol and Cortisone. Clinical Chemistry 2002; 48:1511-1519.
The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
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