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Total Protein, Split Urine
MessagePerforming Lab: Central Lab
Test Code
2162
Alias/See Also
Sunquest: UTPS
CPT Codes
84156
Preferred Specimen
0.2 mL of each of 2 random urine collections
Minimum Volume
0.1 mL of each of 2 random urine collections
Instructions
No preservative required
If a 24-hour urine chemistry test is ordered in addition to a split total protein, prepare an aliquot by: mixing the collections, take 0.5 mL from each of the 2 collections and aliquot each of them into a labeled uirne container (for split testing). Pour the remaining urine infrom both collections together and mix well per 24-hour urine protocol
If a 24-hour urine chemistry test is ordered in addition to a split total protein, prepare an aliquot by: mixing the collections, take 0.5 mL from each of the 2 collections and aliquot each of them into a labeled uirne container (for split testing). Pour the remaining urine infrom both collections together and mix well per 24-hour urine protocol
Transport Temperature
Refrigerated
Specimen Stability
Refrigerated: 7 days
Methodology
Pyrocatechol Violet
Setup Schedule
Monday - Friday
Report Available
Same Day
Reference Range
No reference range established
Clinical Significance
Orthostatic proteinuria is characterized by increased protein excretion in the upright position, but normal levels when supine. This condition can be detected by comparing urine protein levels in a collection split between day and night (see OPTU / Orthostatic Protein, Timed Collection, Urine). Orthostatic proteinuria is common in childhood and adolescence, but rare after age 30.
