Immunoglobulin M, Quantitative, Cerebrospinal Fluid

TEST: 100123
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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

3 - 6 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

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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