| (H & I) |
| Investigation | : | HLA-DQ Typing for Narcolepsy | |
| Investigations | HLA-DQ Typing for Narcolepsy | Inform lab before sending | Not required | Specimen type | 4ml EDTA | Ideal time to take specimen | Not applicable | Labelling requirements | click here | How to take the specimen | Whole blood into EDTA | Transport to the laboratory | see H&I General Information Page | Test Times | Test is a single assay, no repeat testing requirements are required | Turnround | 10 working days | Additional information | Genetic testing for narcolepsy, particularly, HLA-DQB1*06:02 typing is useful as an aid to diagnosis in patients with cataplexy but the association is not specific as there are many narcolepsy patients with HLA-DQB1*06:02 and many HLA-DQB1*06:02 persons who do not have narcolepsy. |
| Additional Examination Requests | A primary sample must be received for this test |