Test Name

Albumin Urine

Test Code

2672

Unit

mg/L

Station

Chemistry

Synonym Name/Abbreviation

ALB-U, microalbumin urine

CPT Code

82570

Performing Facility

American Medical Labs, Herzliya
Pituah

Analyzer

Roche cobas 6000

Test Method

Turbidimetric

Specimen

Urine

AML Preferred Tube

24 hour urine collection without
preservatives

Storage Instructions

Refrigerated, Spontaneous, 24-hour urine or 2nd morning urine

Stability:

7 days at 15 to 25 ^oC

1 month at 2 to 8 ^oC

6 months at -15 to -25
^oC

Min. Volume

10 mL of well mixed urine from measured 24 hour
collection.

Comments

Microalbumin is the term ascribed to the measurement of
albumin in urine at concentrations below the sensitivity of dipstick tests
for total protein. Microalbuminuria (i.e. urine albumin levels above the
reference range and below the level of clinical albuminuria) is an
important indicator of deteriorating renal
function.

Turn-Around-Time

One day.

Intended 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.

Limitations

Because of the inherent day-to-day variability of albumin
excretion into the urine, two of three albumin levels measured within a
three- to six-month period should be abnormal before a considering a
patient to have crossed a diagnostic threshold. Physical excercise during
the previous 24 hours and during the period of collection can cause a
transient elevation in Albumin urine

3-400 mg/L

Patient Preparation

No patient preparation
needed

Reasons for Rejection

Bloody specimen

Adult Reference Ranges

Male and Female: 0 to 30 mg/24
h

Diagnostic criteria according to American Diabetes Asociation
(ADA)

Microalbuminuria : 30-300 mg/24h      Clinical
albuminuria:
>300mg/24h