ARUP's Laboratory Test Directory

Beta-2 Microglobulin, Serum or Plasma : 0080053

Mnemonic: B2M S

Methodology: Quantitative Immunoturbidimetry
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect: Serum separator tube. Also acceptable: Green (sodium or lithium heparin), lavender (EDTA), or pink (K2EDTA).

Specimen Preparation: Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.3 mL)

Storage/Transport Temperature: Frozen.

Unacceptable Conditions: CSF (refer to Beta-2 Microglobulin, CSF, ARUP test code 0080054)

Stability (collection to initiation of testing): After separation from cells: Ambient: 8 hours; Refrigerated: 72 hours; Frozen: 6 months

Reference Interval:
1.1-2.4 mg/L
CPT Code(s): 82232