A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Protein, Total, 12-Hour Urine with Creatinine
Test Code16993
CPT Codes
84156, 82570
Preferred Specimen
10 mL aliquot from a well-mixed, unpreserved 12-hour urine collection, submitted in a plastic, leak-proof container
Minimum Volume
2 mL
Other Acceptable Specimens
UA Urinalysis Transport Tube
Instructions
Record 12-hour urine volume on test form and urine vial
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 4 days
Refrigerated: 5 days
Frozen: 30 days
Refrigerated: 5 days
Frozen: 30 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Acidified urine
Methodology
Colorimetric (C) • Spectrophotometry (SP)
Setup Schedule
Set up: Sun-Fri; Report available: 1-3 days
Reference Range
Total Volume | 200-1700 mL/12 h |
Creatinine, 12-Hr Urine | |
Male | 314-1773 mg/12 h |
Female | 160-1241 mg/12 h |
Protein, Total, 12-Hr Urine | 8-98 mg/12 h |
Protein/Creatinine/12-Hr Urine | |
Male | 20-100 mg/gCre |
Female | 15-150 mg/gCre |
Protein/Creatinine Ratio | |
Male | 0.020-0.100 mg/mgCre |
Female | 0.015-0.150 mg/mgCre |
Clinical Significance
The determination of proteinuria is a well established laboratory procedure for the evaluation of renal disease (glomerular, tubular and overflow proteinuria), urinary tract inflammation, orthostatic proteinuria and preeclampsia (a potential complication of pregnancy). A more rapid clinical assessment of proteinuria using a 12-hour specimen enables a faster diagnosis with subsequent intervention in several of the clinical conditions cited above.
Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153