Test/Investigation
Orexin
Site(s) or Laboratory offering Test/Investigation
Referral laboratory
Also Known as/Frequency of Test
Hypocretin
Indications
A CSF peptide that is severely reduced or absent in narcolepsy with cataplexy.
Comments/Precautions
Referred outside of EPA
Sample type
CSF
Turnaround times (TAT) Urgent/Routine/GP or OPD
10 weeks
Reference intervals (adult unless stated)
Negative
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