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Phosphorus, 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 | PO4U |
| Test group | Phosphorus |
| Performed by | Parnassus Chemistry |
| In House Availability | Test available 7 days per week from 8:00 AM to midnight only. |
| Method | Spectrophotometric (molybdate) |
| Collection Instructions | Refrigerate container during collection period. |
| 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 | 0.5 mL urine |
| UCSF Rejection Criteria | Container not refrigerated during collection. |
| Processing notes | Aliquot 1 mL and add 1 drop of 6N HCl to acidify. |
| Units | mg/D |
| Normal range | 400-1300 mg/D |
| Synonyms | PO4 |
| Stability | Refrigerated 2 days |
| Turn around times | 4-18 hours |
| Additional information | To convert mg/dL to mmol/L (SI units) multiply by 0.323. Output varies wit diet |
| Last Updated | 3/24/2013 7:52:02 PM |
| Entry Number | 741 |
| Lab Procedure Link | Click here for Procedure |
If you have additional questions regarding this test, please call: 415-353-1667