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.
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.
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.
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
Refrigerated: 15 days
Frozen: 30 days
Methodology
Immunoturbidometric
Reference Range
< or = 0.20 mg/L
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes