Test Details

Mnemonic

U17KS

Ordering Code

3683210

CPT-4 Code(s)

83586

Specimen Information

Collect

24 hour urine (refrigerate during collection)
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Specimen Preparation

Send two 4.0 mL well-mixed aliquots refrigerated in sterile, screw capped plastic urine vials.
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Alternate Specimen

2 screw capped plastic vials containing 20 mg Sulfamic acid. Call lab to order acid. Adequate refrigeration is the most important aspect of specimen preservation.
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Minimum Volume

3 mL aliquot
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Transport Temperature

Refrigerated
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Stability

Room temperature: 4 hours
Refrigerated: 14 days
Frozen: 30 days
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Methodology

Quantitative Spectrophotometry
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Reference Range

17-Ketosteroids - per 24 h
Male Female
0 - 11 months: 0.0 - 1.0 mg/d 0.0 - 1.0 mg/d
1 - 5 years: 1.0 - 2.0 mg/d 1.0 - 2.0 mg/d
6 - 10 years: 1.0 - 4.4 mg/d 1.4 - 3.9 mg/d
11 - 12 years: 1.3 - 8.5 mg/d 3.8 - 9.5 mg/d
13 - 16 years: 3.4 - 9.8 mg/d 4.5 - 17.1 mg/d
17 - 50 years: 5.3 - 17.6 mg/d 4.4 - 14.2 mg/d
50+ years: 4.1 - 12.1 mg/d 3.2 - 10.6 mg/d

Creatinine: By Report
Reference intervals for random urine samples (mg/L) are not available.
Note: A large number of substances may interfere with this test. Decreases may be caused by carbamazepine, cephaloridine, cephalothin, chlormerodrin, digoxin, glucose, metyrapone, promazine, propoxyphene, reserpine, and others. Increases may be caused by acetone, acetophenide, ascorbic acid, chloramphenicol, chlorothazide, chlorpromazine, cloxacillin, dexamethasone, erythromycin, ethinamate, etryptamine, methicillin, methyprylon, morphine, oleadomycin, oxacillin, penicillin, phenaglycodol, phenazopyridine, phenothiazine, piperidine, quinidine, secobarbital, spironolactone, and others.
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Performing Laboratory

ARUP Reference Laboratory
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New York DOH Approval Status

Yes
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