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Test Name

HLA Typing for Narcolepsy

CPT Code(s)

81383 (x2), 81377

Methodology

Polymerase Chain Reaction (PCR) followed by Sequence Specific Oligonucleotide Probes (PCR-SSO)

Reference Range(s)

See Laboratory Report

Clinical Significance

Narcolepsy is a multigenic environmentally influenced neurologic sleep disorder affecting 0.01 to 0.15% of the population. Among other genetic regions, it is associated with the HLA class LI region of the HLA complex. HLA-DQ6 and/or HLA-DR15 confer susceptibility to narcolepsy, with variable relative risk according to ethnicity.

To view specimen requirements and codes please Select a regional laboratory.

Not sure which laboratory serves your office? Call us 866-MYQUEST (866-697-8378)

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

34399N
34399Z
34399
34399
34399
34399
34399Z
34399
34399N
34399X
23550
34399
34399
34399
S51552
34399
34399
34399
34399
34399
34399
34399
34399N
34399N
34399X
34399N
34399X
23550
34399
34399
34399
HLA Typing for Narcolepsy
34399