17-Ketosteroids with Creatinine, 24-Hour Urine

Test Code
15201X

CPT Codes
83586; 82570

Specimen Container
Sterile screw cap container

Preferred Specimen
20 mL urine (10 mL minimum).

Instructions
Collect with 10 grams Boric Acid or 25 mL 50% Acetic Acid or 30 mL 6N HCl during collection to maintain pH below 7.5, submitted in a plastic, leakproof container.

Transport Temperature
Refrigerated

Methodology
Colorimetric with Modified Zimmerman Reaction

Reference Range
17-Ketosteroids:
<1 year: <1.0 mg/24 h
1 - 4 years: <2.0 mg/24 h
5 - 8 years: <3.0 mg/24 h
9 - 12 years: 3.0 - 10.0 mg/24 h
13 - 16 years: 5.0 - 12.0 mg/24 h
Females >17 years: 6.0 - 15.0 mg/24 h
Males 17 - 20 years: 9.0 - 22.0 mg/24 h
>21 years: 8.0 - 20.0 mg/24 h
Creatinine, 24-Hour Urine:
< 3 years: Not Established
3 - 8 years: 0.11 - 0.68 g/24 hrs
9 - 12 years: 0.17 - 1.41 g/24 hrs
13 - 17 years: 0.29 - 1.87 g/24 hrs
Adults: 0.63 - 2.50 g/24 hrs

Performed By
Quest Diagnostics Nichols Institute