ARUP's Laboratory Test Directory

Microalbumin, Urine : 0050203

Mnemonic: ALB/CRT

Methodology: Quantitative Immunoturbidimetry
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect: 24-hour urine. Refrigerate during collection. Also acceptable: Random or other timed urine.

Specimen Preparation: Transfer 1 mL aliquot of urine from a well-mixed collection to an ARUP Standard Transport Tube. (Min: 0.5 mL) Record total volume and collection time interval on transport tube and test request form.

Storage/Transport Temperature: Refrigerated.

Stability (collection to initiation of testing): Ambient: 4 hours; Refrigerated: 1 week; Frozen: 3 months (avoid repeated freeze/thaw cycles)
Reference Interval:
 
Test Number Components Reference Interval
0020473Creatinine, 24-Hour Urine  
 
Age Male Female
3-8 years 140-700 mg/d 140-700 mg/d
9-12 years 300-1300 mg/d 300-1300 mg/d
13-17 years 500-2300 mg/d 400-1600 mg/d
18-50 years 1000-2500 mg/d 700-1600 mg/d
51-80 years 800-2100 mg/d 500-1400 mg/d
81 years and older 600-2000 mg/d 400-1300 mg/d
 Creatinine, Random No reference interval
 Microalbumin - mg/dL No reference interval
 Microalbumin - µg/minute 0-20 µg/minute
 Microalbumin - mg/day 2-30 mg/day
 Microalbumin/Creatinine Ratio0-30 mg/g

Note: To convert from mg/g creatinine to mg/mmol of creatinine multiply by 0.113.
CPT Code(s): 82570; 82043
Cross References: Albumin, Urine , Albumin/Creatinine Ratio (Microalbumin, Urine) , Microalbumin, Random Urine (Microalbumin, Urine) , Microalbumin/Creatinine Ratio (Microalbumin, Urine)