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17-Hydroxycorticosteroids, Urine
Test Code11459
Includes
Creatinine
Preferred Specimen
Urine collected in Sterile Cup
Patient Preparation
Collect 24-hour urine refrigerated during collection
Minimum Volume
5 mL
Instructions
Transfer 12 mL aliquot of urine from a well-mixed 24-hour collection to standard transport tubes. 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.
Transport Temperature
Frozen
Specimen Stability
Room temperature: 4 hours
Refrigerated: 7 days
Frozen: 30 days
Refrigerated: 7 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Unpreserved 24-hour urine • Random urine collection • Alkali preservatives (e.g.: specimens previously preserved with NaOH)
Methodology
Quantitative Colorimetry
Setup Schedule
Sets up 2 days a week.
Reference Range
See Laboratory Report
