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Lab Test Dictionary

Beta-2-Microglobulin, (Random Urine ONLY) (4944)

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