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Test Code MYBPR Myelin Basic Protein CSF

Additional Codes

663

Performing Laboratory

Quest Diagnostics

Specimen Requirements

Preferred Specimen(s)

1.2 mL CSF

Minimum Volume

0.5 mL

Collection Instructions

CSF must be clear.

Do not centrifuge.

CSF collection tube #4 is preferred. Submitting 4th lumbar puncture collection tube minimizes blood contamination.

Reference Values

Reference Range(s)

 

2.0-4.0 mcg/L Negative
4.1-6.0 mcg/L Weakly positive
>6.0 mcg/L Positive

Specimen Stability

  • Room temperature: 7 days
  • Refrigerated: 14 days
  • Frozen: 21 days

Reject Criteria

Hemolysis • Xanthochromia/RBCs in CSF

Methodology

Radioimmunoassay (RIA)

Specimen Transport Temperature

Transport Container

Transport tube

Transport temperature: Refrigerate CSF specimens at 2-8° C in sterile, plastic CSF vial(s) and send refrigerated (cold packs) to the laboratory OR freeze CSF specimens at -20° C and send frozen samples to the laboratory on dry ice.

Test Classification and CPT Coding

83873