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HelpTest Code RA1U Alpha-1-Microglobulin, Random, Urine
Specimen Required
Container/Tube: Plastic, 5-mL tube
Specimen Volume: 5 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Useful For
Assessment of renal tubular injury or dysfunction using random urine specimens
Screening for tubular abnormalities
Detecting chronic asymptomatic renal tubular dysfunction (2)
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| AIMR | Alpha-1-Microglobulin, Random, U | No | Yes |
| CRETR | Creatinine, Random, U | Yes, (Order RCTUR) | Yes |
Reporting Name
Alpha-1-Microglobulin, Random, USpecimen Type
UrineSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 7 days | |
| Frozen | 7 days |
Reject Due To
| All specimens will be evaluated at Mayo Clinic Laboratories for test suitability. |
Reference Values
≥18 years: <35 mg/g creatinine
Reference values have not been established for patients who are less than 18 years of age.
Day(s) Performed
Varies
Report Available
1 to 7 daysSpecimen Retention Time
7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| RA1U | Alpha-1-Microglobulin, Random, U | 48415-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| A1M_U | Alpha-1-Microglobulin, Random, U | 46723-3 |
| CRETR | Creatinine, Random, U | 2161-8 |
| A1M_R | A1M/Creat Ratio | 48415-4 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.