24-hour urine. Refrigerated during collection. Also acceptable: Random urine. Freeze within 15 minutes of collection, preservative not required. Reported as mg/L, no reference interval provided.
Transfer 12 mL aliquot of urine from a well-mixed 24-hour collection to ARUP Standard Transport Tubes. Also acceptable: Specimens refrigerated with preservatives are acceptable. Sample pH must be 5.0 - 7.0. Mix well, add 1 g boric acid/100 mL urine, adjust pH (with boric acid) to 5.0-7.0 and freeze. Record total volume, collection time, and pH on transport tube and test request form. Random specimens without preservative are acceptable if frozen within 15 minutes of collection.
Alkali preservatives (e.g. specimens previously preserved with NaOH).
Ambient: 4 hours (with preservative); Refrigerated: 1 week (with preservative); Frozen: 1 month
|17 OH-Corticosteroids, Urine - mg/g CRT||2.0-6.5 mg/g crt|
|OH-Corticosteroids, Urine - per volume||4.0-14.0 mg/d|
|0020473||Creatinine, Urine - per 24h||
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.
|Component Test Code*||Component Chart Name||LOINC|
|0020207||Creatinine, Urine - per volume||2161-8|
|0020208||Creatinine, Urine - per 24h||2162-6|
|0098254||17 OH-Corticosteroids, Urine - mg/g CRT||41404-5|
|0099195||17 OH-Corticosteroids, Urine - per 24h||21036-9|
- 17-Ketogenic Steroid
- Cortisol Free Urine
- Free Urinary Cortisol
- Urinary Free Cortisol