Methodology
Radioimmunoassay (RIA)
Synonyms
Hypocretin, Orexin, Hypocretin-1, Orexin-A
Specimen Type
CSF
Performing Lab
Mayo Medical Lab
Lab Test Days
Third Tuesday of every month; 8 a.m.
Standard TAT
3-28 days
Collection Information
Specimen Required
3mL
Container Type
Sterile Container
Collection Instructions
1. Obtain aliquot from second collection vial (preferred not required). 2. Hemolyzed specimens will give false-positive results. Specimens should be centrifuged to remove any red cells prior to shipping.
Processing Information - Lab Use Only
Transport Temperature
Frozen-Only
Specimen Stability
Frozen=120 days
Test Volume Required
1.5mL of CSF
Minimum Test Volume
.5mL of CSF
Processing Instructions
Order in Mayolink and send with Mayo courier Monday-Friday.
CPT Codes
83519
Revised
07-15-22