Specimen:

Whole Blood

Collection Medium:

Alternate
Collection Media:

Yellow top tube (ACD solution B)

Minimum:

Adult preferred minimum:  5 mL whole blood in EDTA tube
Pediatric(0-4 years) minimum: 3 mL whole blood in EDTA tube

Rejection Criteria:

Specimens collected in green top (heparin) tubes; do not collect on 
Fridays, holidays, day before a holiday, or weekends.

Analytic Time:

7 working days

Reference Range:

By Report
The following HLA combinations are associated with narcolepsy:
DRB1*15 negative; DQB1*0602 positive
DRB1*15 positive; DQB1*0602 negative
DRB1*15 positive; DQB1*0602 positive
The value of HLA typing in patient suspected of having an HLA 
associated disease depends on a presumptive diagnosis of the disease 
based on clinical and other laboratory findings.  The presence of a 
particular HLA antigen does not establish the diagnosis of any 
particular disease but provides a probability statement for the 
existence of the disease in the patient.
This test is performed pursuant to an agreement with Roche Molecular 
Systems, Inc.

Comments:

Can be refrigerated for one week.

Methodology:

Polymerase Chain Reaction (PCR)

CPT Code:

83891, 83894(x2), 83900(x2), 83912; additional CPT codes modifiers may 
be required for procedures performed to test for oncologic or inherited 
disorders.