Orexin

Test investigation

Orexin

Laboratory offering test

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

Negative