Specimen

(Urine) Random

Collection Medium:

Alternate
Collection Media:

Call laboratory for additional acceptable specimen collection 
containers.

Minimum:

Random urine, no preservative

Testing Schedule:

24 hrs/day, 7 days a week, including holidays.

Analytic Time:

1 hour (upon receipt in laboratory)

Reference Range:

<20 micrograms/milligram creatinine.  Not for use in patients with
dipstick positive proteinuria.

Comments:

(Creatinine done on sample at no additional charge). Abnormal results 
should be followed up with a timed collection (see microalbumin, timed 
collection).  Sample with urine protein > 30 mg/dl will have 
microalbumin canceled, and urine protein result reported and charged.

Test
Limitations:

Criterion: Recovery within plus or minus 10% of initial value.

Icterus: No significant interference up to an approximate conjugated 
bilirubin concentration of 66 mg/dl.

Hemolysis: No significant interference up to an approximate hemoglobin 
concentration of 300 mg/dl.

No interference from acetone is less than 60 mmol/l, ascorbic acid is 
less than 1 g/l, creatinine is less than 5 g/l, glucose is less than 20 
g/l, uric acid is less than 700 mg/l, urea is less than 700 mmol/l and 
urobilinogen is less than 338mg/l.

Methodology:

Turbidometric

CPT Code:

82043

See Additional Information:
Urine Tests Requiring no Preservatives