Albumin, 24-Hour Urine
Also known as: Albumin, Urine, Microalbumin
Use
Measurement of albumin levels in urine below the detection level of urine dipsticks. This test is useful in the management of patients with relatively early diabetes mellitus to assist in avoiding or delaying the onset of diabetic renal disease.
Special Instructions
The American Diabetes Association (ADA) recommends that routine urinalysis should be performed annually on adults with diabetes.1
Limitations
Because of the inherent day-to-day variability of albumin excretion into the urine, two of three albumin levels measured within a three-month to six-month period should be abnormal before considering a patient to have crossed a diagnostic threshold. Physical exercise during the previous 24 hours and during the period of collection can cause a transient elevation in albumin. Other variables, including infection, fever, congestive heart failure, marked hyperglycemia, and marked hypertension can result in increased albumin levels.
Methodology
Immunoassay (Immunoturbidimetric)
Biomarkers
LOINC Codes
- 1755-8
- 14957-5
- 1755-8
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
10 mL aliquot
Minimum Volume
1 mL aliquot
Container
Plastic urine container
Collection Instructions
Collect 24-hour urine without preservatives. pH must be 4 to 8.
Storage Instructions
Room temperature
Causes for Rejection
Bloody specimen
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 15 days |
| Refrigerated | 15 days |
| Frozen | 15 days |