Beta-2-Microglobulin, Urine




Test Mnemonic

URB2M

CPT Codes

  • 82232 - QTY (1)

Includes

  • Creatinine, Urine - per volume
  • Beta-2-Microglobulin, Urine
  • Beta-2-Microglobulin, ratio to CRT
  • pH, Urine

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
3 mLUrine, randomClean container FrozenPatient preparation: Void the urinary bladder, then drink a large glass of water and collect a urine specimen within 1 hour. Laboratory instructions: If pH is >8, lower pH to 6-8 with 1 M HCL. If pH <6, increase to 6-8 with 5% NaOH. Record the pH on the transport tube and ship frozen.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
1 mL     

Stability

Environmental Condition Description
Ambient8 hours
Refrigerated48 hours
Frozen2 months (after pH has been adjusted to 6-8)

Days Performed

Sun - Sat

Turnaround Time

1 - 2 days

Methodology

Name Description
Chemiluminescence Immunoassay (CLIA) 

Reference Range

Beta-2-Microglobulin, Ur ug/L
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal0 - 300ug/L
Beta-2-MicroglobulinRatio to CRT
Sex Age From Age To Type Range Range Unit
   Years99 YearsNormal0 - 300ug/g crt

Special Info

Patient preparation: Void the urinary bladder, then drink a large glass of water and collect a urine specimen within 1 hour. Laboratory instructions: If pH is >8, lower pH to 6-8 with 1 M HCL. If pH <6, increase to 6-8 with 5% NaOH. Record the pH on the transport tube and ship to referral laboratory frozen. Grossly hemolyzed specimens and specimens with a urine pH less than 2 or greater than 10 will be rejected.

Clinical Info

This test is can be useful in evaluation of renal tubular damage or to monitor exposure to mercury and cadmium.