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HelpTest Code A124 Alpha-1-Microglobulin, 24 Hour, Urine
Necessary Information
24-Hour volume (in milliliters) is required.
Specimen Required
Container/Tube: Plastic, 5-mL tube
Specimen Volume: 4 mL
Collection Instructions:
1. Collect urine for 24 hours.
2. No preservative.
3. Mix well before taking 4-mL aliquot.
Additional Information: For multiple collections see Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens
Useful For
Assessment of renal tubular injury or dysfunction using 24-hour urine collections
Screening for tubular abnormalities
Detecting chronic asymptomatic renal tubular dysfunction(2)
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| AIM | Alpha-1-Microglobulin, 24 HR, U | No | Yes |
| A1MCR | A1M/Creat Ratio | No | Yes |
| A1MC | Alpha-1-Microglobulin Concentration | No | Yes |
| CRT24 | Creatinine, 24 HR, U | Yes, (Order CTU) | Yes |
Special Instructions
Reporting Name
Alpha-1-Microglobulin, 24 HR, USpecimen 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
| Gross hemolysis | Reject |
Reference Values
≥18 years: <23 mg/24 hours
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
83883
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| A124 | Alpha-1-Microglobulin, 24 HR, U | 99075-4 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CR_A | Creatinine, 24 HR, U | 2162-6 |
| AIM | Alpha-1-Microglobulin, 24 HR, U | 48414-7 |
| A1MC | Alpha-1-Microglobulin Concentration | 99076-2 |
| A1MCR | A1M/Creat Ratio | 99075-4 |
| TM27 | Collection Duration (h) | 13362-9 |
| VL69 | Urine Volume (mL) | 3167-4 |
| CR_24 | Creatinine Concentration, 24 HR, U | 20624-3 |
Forms
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.