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Test Compendium

Test Name


Test Code

  • 2479

Test Synonym

  • IgG Synthesis Rate, CNS Index

Minimum Volume

  • 0.75 mL

Specimen Type

  • CSF and Serum

Primary Container

  • CSF And Serum, Serum Separator Tube, Plain Red Top Tube, Sterile Container, Transfer Tube

Transport Temp

  • Ambient


  • 5 days

Specimen Requirements

  • 1.5 mL serum AND 1 mL CSF

Specimen Retention

  • Serum AND Cerebrospinal fluid (CSF) Collect for serum Red-top tube or SST (gel-barrier tube) For the CSF - Spinal tab, transfer CSF to a plastic sterile tube This test requires both a CSF and a Serum sample