Tumor Tip of the Week SSDI-Serum Beta-2 Microglobulin Pretreatment Level

04-04-2025

Scenario: Multiple Myeloma patient

• Beta -2 -Microglobulin: 2,421 Ref Range: 900 – 2300 ug/L. 

Question: How will you assign SSDI Serum Beta-2 Microglobulin Pretreatment Level?

• 0 β2-microglobulin < 3.5 mg/L
• 1 β2-microglobulin ≥ 3.5 mg/L < 5.5 mg/L
• 2 β2-microglobulin ≥ 5.5 mg/L

Answer: 0 β2-microglobulin < 3.5 mg/L

Discussion: This field is recorded utilizing mg/L.  The reference range for our results was not measured in mg/L. So, you must do the conversion.  Just search on the internet for ug/l to mg/l conversion.  A converter will pop up, you enter the lab value 2421 ug/l and it converts to 2.421 mg/L.  Now you can pick the correct value for this SSDI-0 β2-microglobulin < 3.5 mg/L