17-Hydroxycorticosteroids with Creatinine, 24-Hour Urine [15202X]

Test Code
21846

CPT Codes
82570, 83491

Preferred Specimen
20 mL aliquot of a well mixed 24-hour urine, submitted in a plastic, leak-proof container

Minimum Volume
10 mL

Instructions
Collect with 10 grams Boric Acid or 25 mL 50% Acetic Acid or 25 mL 6N HCl during collection to maintain pH below 7.5. Collect urine with preservative, or keep urine refrigerated during collection, if preservative is not used. Ship frozen if preservative is not used. Please specify on the request form and on the urine container the total 24-hour urine volume.

Transport Temperature
Refrigerated (cold packs)

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

Methodology
Colorimetric with Porter-Silber Reaction

Limitations
Requires accurate 24-hour urine collection.

Reference Range
17-Hydroxycorticosteroids, 24-Hour Urine (mg/24 hours)
Infant through 1 Year Not established
1- 2 years 0.5-2.5
3- 4 years 1.0-4.0
5- 6 years 1.0-4.8
7- 8 years 1.0-5.6
9-10 years 1.0-7.0
11-12 years 1.5-8.0
13-16 year female 2.8-6.8
13-16 year male 2.0-6.0
17-20 year female 2.0-7.0
17-20 year male 3.0-10.0
Adult female 2.0-6.0
Adult male 3.0-10.0
   
Creatinine, 24-Hour Urine (g/24 hours)
< 3 years Not established
3-8 years 0.11-0.68
9-12 years 0.17-1.41
13-17 years 0.29-1.87
Adults 0.63-2.50




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.