Test directory: Beta-2-Microglobulin, Urine

Ordering Code 3941
Test Name Beta-2-Microglobulin, Urine
Alias Beta-2 Microglobulin, Random Urine
B2 Microglobulin
B2M
B-2 Microglobulin
Preferred Specimen Urine, Random
Preferred Container Sterile Container
Optimum Volume 5 mL
Collection Instructions Patient should void bladder, then drink a large glass of water. A urine sample should be collected within 1 hour.
Handling Instructions Central AP: If pH is greater than 8, lower pH to 6-8 by adding 1M HCL. If pH less than 6, increase pH to 6-8 by adding 5% NaOH. Record pH on the transport tube and test request form
Guam: Adjust pH prior to frozen shipping, record pH on transport tube.
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
Specimen Stability Ambient: 8 Hours
Refrigerated: 48 Hours
Frozen: 2 Months
Avail. Stat NO
Analytic Time 4 Days
Methodology Quantitative Chemiluminescent Immunoassay
Reference Lab  ARUP Laboratories

Reference range(s)

The reference ranges listed below are valid on this date of November 8, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Beta-2-Microglobulin, Urine ALL See report.
pH, Urine ALL See report.
Beta-2-Microglobulin, ratio to CRT ALL See report.
Creatinine, Urine - per volume ALL See report.