HLA-A29
Test Mnemonic
HLAA29
CPT Codes
- 81374 - QTY (1)
Performing Laboratory
Allogen Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 5 mL | Whole blood | EDTA (Lavender) | Ambient |
Alternate Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 7 mL | Whole blood | ACD A or B (Yellow) | Ambient |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 1 week |
| Refrigerated | 1 week |
| Frozen | Unacceptable |
Days Performed
Mon - Fri
Turnaround Time
2 - 4 days
Methodology
| Name | Description |
|---|---|
| Polymerase Chain Reaction (PCR) | |
| Sequence Specific Oligonucleotide Probe (SSOP) |
Reference Range
Special Info
Transport WHOLE BLOOD at AMBIENT temperature. DO NOT CENTRIFUGE.
Clinical Info
Birdshot retinochoroidopathy (BSCR) is a rare subtype of idiopathic posterior uveitis with distinct clinical characteristics that can lead to severe visual impairment. BSCR has the strongest documented HLA association for a human disease with > 95% of patients carrying HLA-A29. The frequency of HLA-A29 varies by ethnic group and could be up to 10 % in some US populations. Determination of HLA-A29 is of diagnostic significance in BSCR.