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Beta - 2 Microglobulin, Serum  (B2M S)

Synonyms:  None listed
Specimen:  Blood; (1) SST (serum separator) or Red (no preservative) top vacutainer tube.
                        Volume:  Full primary tube
Minimum Volume:  0.5 mL serum
Collection:  If tube other than an SST collected, transfer serum to a tightly capped plastic aliquot tube within 2 hours of collection for transport. Refrigerate at 2-8°C.
Storage:  Refrigerate at 2-8 degrees C
Rejection Criteria:  Incorrect specimen type; improper labeling.
Reference Range:  See report
Methodology:  Immunochemiluminometric assay (ICMA)
Test Use:  Evaluate renal disease; tumor marker for certain types of malignancies
Additional Information:  It is increased nonspecifically in inflammatory reactions and in active chronic lymphocytic leukemia in which there is increased lymphocyte turnover. It may be a useful differentiator of glomerular and tubular dysfunction: in glomerular disease ß²-microgl
Testing Includes:  Specimen sent to LabCorp. LabCorp test # 010181.
Testing Facility:  LabCorp