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Test Code 17OHQ 17-Hydroxycorticosteroids with Creatinine, 24-Hour Urine

Specimen Required

20 mL aliquot of a well mixed 24-hour urine

Specimen Minimum Volume

10 mL

Specimen Stability

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

Report Available

Next day

Method Name

Colorimetric with Porter-Silber Reaction

Collection Container / Tube

Preferred: Plastic Leak Proof Container
Other Acceptable Container: None

Transport / Storage Conditions

Refrigerated 

Special 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.

Reference Values

7-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

Day(s) Performed

Tues-Thurs a.m.

CPT Codes

82570, 83491

Alias/See Also

LAB13396