ARUP's Laboratory Test Directory

17-Ketosteroids, Urine : 0080650

Mnemonic: 17 KETO

Methodology: Quantitative Spectrophotometry
Performed: Mon, Wed, Fri
Reported: 1-5 days
Specimen Required: Collect: 24-hour urine. Refrigerate during collection.

Specimen Preparation: Transfer 4 mL aliquot from a well-mixed 24-hour urine collection to an ARUP Standard Transport Tube or ARUP supply #48098 (ARUP Standard Transport Tube with 12 mg Sulfamic Acid) (Min: 3 mL). Record total volume and collection time interval on transport tube and test request form. Adequate refrigeration is the most important aspect of specimen preservation. Preservation can be enhanced by adjusting the pH to 2-4 by addition of 6 mol/L HCl or by using ARUP supply #48098, available online through e Supply using ARUP Connect™ or by contacting ARUP Client Services at (800) 522-2787.
Note: use caution when adjusting with 6 mol/L HCl as a pH of less than 2 will decrease analyte stability.

Storage/Transport Temperature: Refrigerated.

Stability (collection to initiation of testing): Ambient: 4 hours; Refrigerated: 2 weeks; Frozen: 1 month
Reference Interval:
 
 
Test Number Components Reference Interval
 17-Ketosteroids 
 
Male Female
0-11 months: 0.0-1.0 mg/d
1-5 years: 1.0-2.0 mg/d
6-10 years: 1.0-4.4 mg/d
11-12 years: 1.3-8.5 mg/d
13-16 years: 3.4-9.8 mg/d
17-50 years: 5.3-17.6 mg/d
51 years and older: 4.1-12.1 mg/d 		0-11 months: 0.0-1.0 mg/d
1-5 years: 1.0-2.0 mg/d
6-10 years: 1.4-3.9 mg/d
11-12 years: 3.8-9.5 mg/d
13-16 years: 4.5-17.1 mg/d
17-50 years: 4.4-14.2 mg/d
51 years and older: 3.2-10.6 mg/d
 Creatinine, Urine - per 24h  
 
Age Male Female
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

Interpretive Data: Reference intervals for random urine samples (mg/L) are not available.
Note: An alternative and more specific test for adrenal androgen function is Dehydroepiandrosterone Sulfate, Serum (0070040).

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. 
CPT Code(s): 83586