ARUP's Laboratory Test Directory
| 0080650: 17-Ketosteroids, Urine |
| Test Mnemonic: 17 KETO | |
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Methodology: Spectrophotometry (Zimmerman)
Performed: Mon, Wed, Fri Reported: 1-5 days |
| Specimen Required: | |
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Collect: 24-hour urine. Specimen should be refrigerated during collection.
Transport: 4 mL aliquot from a well-mixed 24-hour collection at 2-8°C. Submit specimen in an ARUP Standard Transport Tube. Pediatric Collection/Transport: 2.5 mL aliquot from a well-mixed 24-hour collection at 2-8°C. Remarks: Adequate refrigeration is the most important aspect of specimen preservation. Preservation can be enhanced by adjusting the pH to 2-4. Adjust the pH by adding an acid, such as 6 mol/L HCl. A pH of < 2 will decrease analyte stability. Record total volume and collection time interval on transport tube and test request form. Stability: Ambient: 4 hours; Refrigerated: 2 weeks; Frozen: 1 month |
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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 |