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HelpTest Code ALBR Albumin, Random, Urine
Reporting Name
Albumin, Random, UPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Assessing the potential for early onset of nephropathy in diabetic patients using random urine specimens
Method Name
RALB1: Immunoturbidity
CRE2: Enzymatic Colorimetric Assay
Ordering Guidance
Specimen Required
Patient Preparation: Heavy exercise should be avoided prior to collection.
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Container/Tube: Plastic tube
Specimen Volume: 5 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Specimen Type
UrineSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 7 days | |
| Ambient | 7 days | ||
| Frozen | 7 days |
Reject Due To
| All specimens will be evaluated at Mayo Clinic Laboratories for test suitability. |
Reference Values
Males: <17 mg/g creatinine
Females: <25 mg/g creatinine
Interpretation
In random urine specimens, normal urinary albumin excretion is below 17 mg/g creatinine for males and below 25 mg/g creatinine for females.(3)
Microalbuminuria is defined as an albumin:creatinine ratio of 17 to 299 for males and 25 to 299 for females.
A ratio of albumin:creatinine of 300 or higher is indicative of overt proteinuria.
Due to biologic variability, positive results should be confirmed by a second, first-morning random or 24-hour timed urine specimen. If there is discrepancy, a third specimen is recommended. When 2 out of 3 results are in the microalbuminuria range, this is evidence for incipient nephropathy and warrants increased efforts at glucose control, blood pressure control, and institution of therapy with an angiotensin-converting-enzyme (ACE) inhibitor (if the patient can tolerate it).
Day(s) Performed
Monday through Sunday
Report Available
1 to 3 daysTest Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
82043
82570
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| ALBR | Albumin, Random, U | 9318-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| RALB1 | Albumin, Random, U | 89999-7 |
| CRE2 | Creatinine | 2161-8 |
| A_CR | Albumin/Creatinine Ratio | 9318-7 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| RALB1 | Albumin, Random, U | No | Yes |
| CRE2 | Creatinine | No | Yes |
| A_CR | Albumin/Creatinine Ratio | No | Yes |