Alpha-1-Microglobulin, Random, Urine - Mayo Clinic Laboratories Extended Catalog

Method Name

AIMR: Immunonephelometry

CRETR: Enzymatic Colorimetric Assay

Specimen Required

Container/Tube: Plastic, 5-mL tube

Specimen Volume: 5 mL

Collection Instructions:

1. Collect a random urine specimen.

2. No preservative.

Reporting Name

Alpha-1-Microglobulin, Random, U

Specimen Type

Urine

Specimen Stability Information

Specimen Type	Temperature	Time
Urine	Refrigerated (preferred)	7 days
	Frozen	7 days

Report Available

1 to 4 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

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.

Useful For

Assessment of renal tubular injury or dysfunction using random urine specimens

Screening for tubular abnormalities

Detecting chronic asymptomatic renal tubular dysfunction (2)

Day(s) Performed

Monday, Wednesday and Friday

Test 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

83883

82570

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

Specimen Minimum Volume

1 mL

Reference Values

ALPHA 1- MICROGLOBULIN/CREATININE RATIO:

≥18 years: <35 mg/g creatinine

Reference values have not been established for patients younger than 18 years of age.

CREATININE:

≥18 years old: 16-326 mg/dL