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Test Code LAB5021 Microalbumin (Random Urine) - Albumin/Creatinine Ratio

Performing Laboratory

Asante Rogue Regional Medical Center

Specimen Minimum Volume

1.0 mL

Billing Code

2053023 

2053031

Methodology

Turbidimetric (MA); Kinetic Alkaline Picrate (CREAT)

Specimen Requirements

Random urine
Sterile capped urine container


Early morning collection preferred

Do not use urine preservatives

Day(s) Test Set Up

Routine – same day

ASAP – 2 hours after receipt of specimen in lab

STAT – 1 hour after receipt of specimen in lab

Test Classification and CPT Coding

82043  Albumin; urine, microalbumin, quantitative

82570  Creatinine; other source

Additional Information

Measures small amounts of albumin that may be present in the urine.  Used for early detection and monitoring of Diabetic Nephropathy.  Diabetes is now the most common cause of end stage renal disease (ESRD).  About
20%-30% of patients with Type I and Type II diabetes develop evidence of nephropathy.  If left untreated, a significant number of these patients will progress to ESRD.  Early intervention has the greatest impact on improving the course of diabetic nephropathy. Type II diabetics should be screened for microalbuminuria at the time of diagnosis and annually thereafter.  Microalbuminuria rarely occurs with Type I diabetics of short  duration.  Microalbumin screening with Type I diabetics should be performed annually beginning after 5 years of disease onset.  A creatinine is run in conjunction with an albumin to help correct for dilutional variations in random urine samples.Factors that Transiently Interfere with Urinary Screening for Microalbuminuria:

Increases in
albuminuria		 Decreases in
albuminuria
Blood in urine
Congestive heart failure
Exercise within 24 hours
Excessive protein intake
Fever
Uncontrolled diabetes
Uncontrolled hypertension
Urinary tract infection
Vaginal fluid contamination of specimen		 ACE
inhibitors
Malnutrition
Nonsteroidal anti-inflammatory drugs

 

Performing Department

Chemistry

Reasons for Rejection

Collection with preservatives

Lack of Two Patient Identifiers:

         1-Patient’s First & Last name 

         2-Patient’s Date of Birth

Specimen Transport Temperature and Stability

Store refrigerated

Should run within 72 hours of collection