Beta 2 Microglobulin Urube 38994X

Test Code

Alias/See Also

CPT Codes

Preferred Specimen
10 mL random urine collected in a plastic leak-proof container

Minimum Volume

Fasting is preferred. Void bladder drink 500 ml water collect urine

Transport Container

Transport Temperature

Specimen Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 21 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens received in a non-Beta-2 Microglobulin transport tube with a pH less than 6 • Any volume other than 10 mL urine in the transport tube • Any specimen with pH less than 6


Setup Schedule
Set up: Mon-Sat; Report available: Next day

Reference Range
B2 Microglobulin/Creatinine Ratio ≤132 mcg/g creat

Creatinine, Random Urine
≤6 Months 2-28 mg/dL
7-11 Months 2-31 mg/dL
1-2 Years 2-110 mg/dL
3-8 Years 2-130 mg/dL
9-12 Years 2-160 mg/dL
>12 Years Male 20-320 mg/dL
>12 Years Female 20-275 mg/dL

Clinical Significance
Urinary Beta-2-Microglobulin is used as an indictor of renal impairment.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.