|
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 # |
Albumin, 24-Hour Urine with Creatinine
Test Code15281
CPT Codes
82043, 82570
Includes
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
5 mL urine aliquot from a well-mixed 24-hour urine collection submitted in a plastic leak-proof container - no preservative
Minimum Volume
2 mL
Other Acceptable Specimens
Urinalysis transport tube (yellow-top, blue fill line, preservative tube)
Instructions
Specify 24-hour total volume on container and test requisition.
Note: Exercise within 24 hours, infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values.
Note: Exercise within 24 hours, infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension may elevate urinary albumin excretion over baseline values.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Acid preserved urine
Methodology
Turbidometric
Setup Schedule
Set up: Daily; Report available: 1 day
Reference Range
Albumin, 24 hour urine | <30 mg/24 h |
Albumin, 24 hour urine | <20 mcg/min |
Creatinine, 24-Hour Urine
<3 Years | Not established |
3-8 Years | 0.10-0.80 g/24 h |
9-12 Years | 0.20-1.40 g/24 h |
13-17 Years | 0.40-1.90 g/24 h |
>17 Years | 0.50-2.15 g/24 h |
The ADA defines abnormalities in albumin excretion as follows:
Category | Result (mg/24 h) | Result (mcg/min) |
Normal | <30 | <20 |
Microalbuminuria | 30-299 | 20-199 |
Clinical Albuminuria | ≥300 | ≥200 |
Clinical Significance
Albumin excreted in the urine (Microalbumin) is a sensitive marker of Nephropathy. It is used to screen for early renal disease in diabetic patients.