Methodology
Nephelometry
Synonyms
B2; Beta 2; B2M
Specimen Type
Urine, Random
Performing Lab
Quest Diagnostics Chantilly
Epic ID
LAB00926
Lab Test Days
Monday-Saturday
Standard TAT
3 Days
Collection Information
Specimen Required
10 mL Random Urine (ONLY)
Container Type
Sterile Container
Collection Instructions
1. Patient should void bladder, then drink at least 500 mL (approximately 17 oz) of water. 2. A urine sample should be collected within 1 hour. 3. Pour exactly 10 mL of random urine into a Quest Diagnostics Beta-2 Microglobulin Transport Tube (supplied by Quest/located in referral testing). 4. Ship room temperature. 5. Alternatively, if the collection tubes are not available, pH the specimen must be adjusted to between 6 and 8 using 1N NaOH prior to shipping. 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 above or below 10 mL will result in a pH that is outside the acceptable range.
Processing Information - Lab Use Only
Transport Temperature
Room Temp-OK/Refrigerated-OK/Frozen-OK
Specimen Stability
Room Temp: 5 Dats; Refrigerated: 15 Days; Frozen: 30 Days
Test Volume Required
10 mL Random Urine (ONLY)
Minimum Test Volume
10 mL Random Urine (ONLY)
Processing Instructions
1. Pour exactly 10 mL of random urine into a Quest Diagnostics Beta-2 Microglobulin Transport Tube (supplied by Quest/located in referral testing). 2. Ship room temperature. 3. Alternatively, if the collection tubes are not available, pH the specimen must be adjusted to between 6 and 8 using 1N NaOH prior to shipping. 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 above or below 10 mL will result in a pH that is outside the acceptable range. Indicate pH in flag comments, on specimen and on batch sheet.
Comments
This test code is NO LONGER to be used for time urine collections. At this time, there is not an alternative test available specific for a timed urine collection. 8/17/17 SA
CPT Codes
82232
Revised
5/17/24
Initials
SA