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Immunoglobulin M, Quantitative, Cerebrospinal Fluid

CPT: 82784
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Synonyms

  • Cerebrospinal Fluid IgM
  • CSF IgM
  • CSF Immunoglobulin M
  • IgM CSF

Test Includes

Quantitation of IgM in CSF


Special Instructions

The third tube of a routinely obtained three-tube set of CSF should be used for CSF IgM study.


Expected Turnaround Time

2 - 6 days


Related Documents


Specimen Requirements


Specimen

Cerebrospinal fluid (CSF)


Volume

1 mL


Minimum Volume

0.25 mL


Container

Sterile container


Storage Instructions

Room temperature


Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x3


Test Details


Use

This test may be used to evaluate the central nervous system involvement by infection, neoplasm, or primary neurological disease (ie, multiple sclerosis). A local synthesis of IgM within the CNS is most prominent in patients with neuroborreliosis or mumps-meningoencephalitis.


Methodology

Immunologic


Reference Interval

See table.

Age

Range (mg/dL)

0 to 17 y

Not established

18 to 50 y

0.01−0.08

>50 y

0.01−0.13


LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
100123 Immunoglobulin M, Quant, CSF 2471-1 100123 Immunoglobulin M, Quant, CSF mg/dL 2471-1

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