17-Ketosteroids with Creatinine, 24-Hr Urine [15201X]

Test Code

CPT Codes
82570, 83586



Preferred Specimen
20 mL of a 24-hour urine collected in 10 grams boric acid, submitted in a plastic, leak-proof urine container

Minimum Volume
10 mL

Other Acceptable Specimens
24-hour urine collected in 25 mL 50% acetic acid • 24-hour urine collected in 30 mL with 6N HCl

Collect urine with 10 grams Boric Acid (preferred) or 25 mL 50% Acetic Acid or 30 mL 6N HCl (acceptable) during collection to maintain pH below 7.5. Keep urine refrigerated during collection, especially if preservative is not used.
Ship frozen if preservative is not used.
Ship preserved urines refrigerated (cold packs)
Record 24-hour urine volume on test request form and urine container.

Transport Temperature
Preserved urine: Refrigerated (cold packs)
Unpreserved urine: Frozen

Specimen Stability
Room temperature: 8 hours
Refrigerated: 7 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature

Colorimetric with Modified Zimmerman Reaction

Requires accurate 24-hour urine collection.

Reference Range
<1 year: < 1.0 mg/24 hrs
1-4 years: < 2.0 mg/24 hrs
5-8 years: < 3.0 mg/24 hrs
9-12 years: 3.0-10.0 mg/24 hrs
13-16 years: 5.0-12.0 mg/24 hrs

>16 years: 6.0-15.0 mg/24 hrs

17-20 years: 9.0-22.0 mg/24 hrs
>20 years: 8.0-20.0 mg/24 hrs

If age and sex are not provided: 6.0-20.0 mg/24 hrs Default

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.