1-5 days after setup at PeaceHealth Laboratories’ reference lab.
CPT Code:
83586-90
Specimen Collection Details
Collection:
24-hour urine in a clean, dry plastic container. Refrigerate during collection.
Handling:
Adequate refrigeration is the most important aspect of preservation. Preservation can be enhanced by adjusting pH to 2.0-4.0 using 6 mol/L HCl. pH less than 2.0 will decrease stability.
Stability:
Specimen stable 4 hours ambient, 14 days refrigerated, or 1 month frozen.
Standard Volume:
5 mL aliquot from a well mixed 24-hour urine collection.
Minimum Volume:
3 mL aliquot from a well mixed 24-hour urine collection.
Transport:
Refrigerated; or if frozen, on dry ice.
Age
Male
Female
Creatinine (24-hour)
3-8 years
140-700 mg/d
140-700 mg/d
9-12 years
300-1300 mg/d
300-1300 mg/d
13-17 years
500-2300 mg/d
400-1600 mg/d
18-50 years
1000-2500 mg/d
700-1600 mg/d
51-80 years
800-2100 mg/d
500-1400 mg/d
81 years and older
600-2000 mg/d
400-1300 mg/d
17-Ketosteroids
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
51 years and older
4.1-12.1 mg/d
3.2-10.6 mg/d
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, chlorothiazide, chlorpromazine, cloxacillin, dexamethasone, erythromycin, ethinamate, etryptamine, methicillin, methyprylon, morphine, oleandomycin, oxacillin, penicillin, phenaglycodol, phenazopyridine, phenothiazine, piperidine, quinidine, secobarbital, spironolactone, and others.
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