What is the reference range of an immunofixation test?

Updated: Jul 29, 2019
  • Author: Anastasios Dimou, MD; Chief Editor: Eric B Staros, MD  more...
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Immunofixation consists of an electrophoresis phase and a fixation phase. [1]  Serum or urine immunofixation negative for a monoclonal protein or a polyclonal pattern is considered to be normal. CSF immunofixation that does not reveal oligoclonal bands is also considered normal. A polyclonal immunoglobulin pattern in the serum or urine immunofixation is considered to be nonspecific.

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