Microalbumin, Random Urine with and without Creatinine

Microalbumin, Random Urine with Creatinine

Test Code: 6517
CPT Code(s): 82043, 82570
Includes: Microablumin, Random Urine and Creatinine, Random Urine

Microalbumin, Random Urine without Creatinine

Test Code: 17674
CPT Code(s): 82043
Includes: Microablumin, Random Urine

Methodology: Turbidimetric

Clinical Significance:
Microalbumin is albumin excreted in the urine and is a sensitive marker of nephropathy. It is used to screen for early renal disease in diabetic patients.

Creatinine is the endproduct of creatine metabolism. Creatine is present primarily in muscle and the amount of creatinine produced is related to total skeletal muscle mass. Daily creatinine production is fairly constant except when there is massive injury to muscle. The kidneys excrete creatinine very efficiently and blood levels and daily urinary excretion of creatinine fluctuates very little in healthy normal people. Since blood and daily urine excretion of creatinine shows minimal fluctuation, creatinine excretion is useful in determining whether 24-hour urine specimens for other analytes (e.g., protein) have been completely and accurately collected.

Test FAQ:

• Microalbumin (Urinary Albumin Excretion)
• Test Summary: Summarizes information relating to this test including clinical use and background, specimen requirements, methodology, test interpretation, and peer-reviewed references.
• Test Guide - Laboratory Testing for Diabetes Diagnosis and Management: This test guide discusses the use and interpretation of laboratory tests for diagnosing diabetes and monitoring glycemic control.
• Chronic Kidney Disease: Laboratory Support of Diagnosis and Management