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Urea Nitrogen, 24 hour (or timed) urine
| Item | Value |
|---|---|
| Approval req'd? | Yes, if testing is requested between midnight and 8:00 AM. |
| Available Stat? | No |
| Test code | UNU |
| Test group | Urea |
| Performed by | Parnassus Chemistry |
| In House Availability | Test available 7 days per week from 8:00 AM to midnight only. |
| Method | Enzymatic conductivity, kinetic (urease) |
| Collection Instructions | Refrigerate the container during the period of the collection. |
| Container type | 24 hour urine collection container Click here for Urine Preservative Requirements |
| Amount to Collect | Entire urine output for collection period |
| Sample type | Timed urine collection |
| Preferred volume | 1 mL urine |
| Min. Volume | 0.2 mL urine |
| UCSF Rejection Criteria | Container not refrigerated during collection. |
| Units | g/D |
| Normal range | 10-20 g/D |
| Synonyms | UUN |
| Stability | Refrigerated 2 days |
| Turn around times | Same or next day |
| Additional information | To convert mg/dL to mmol/L (SI units) multiply by 0.357. Output varies with diet. |
| Last Updated | 3/24/2013 7:54:02 PM |
| Entry Number | 966 |
| Lab Procedure Link | Click here for Procedure |
If you have additional questions regarding this test, please call: 415-353-1667