Test Details

Mnemonic

UB2M

Ordering Code

3719360

CPT-4 Code(s)

82232

Specimen Information

Patient Preparation

The patient should void bladder, then drink 17 ounces of water and provide a urine sample within
one hour.

Collect

Random urine

Specimen Preparation

Send 10.0 mL of random urine in a Quest Beta-2 Microglobulin Transport Tube.
Beta-2 Microglobulin in urine is unstable in acidic urine (less than pH 6). Exactly 10 mL of urine
in the Quest Diagnostics Beta-2 Microglobulin Transport Tube is required to achieve the
required pH of between 6 and 8. Any volume of urine above or below 10 mL will result in a pH
that is outside the acceptable range.

Alternate Specimen

Collect random urine. Immediately adjust the pH between 6 -8 with 1N NaOH. Send 10.0 mL
urine in a screw capped plastic urine container.

Minimum Volume

10.0 mL

Transport Temperature

Refrigerated

Rejection Criteria

pH <6 or >8

Stability

Room temperature: 5 days
Refrigerated: 15 days
Frozen: 30 days

Methodology

Immunoturbidometric
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Reference Range

< or = 0.20 mg/L
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Performing Laboratory

Quest
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New York DOH Approval Status

Yes
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