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HLA-B27
Number 725
CPT Code 81374
Alias ANKYLOSING SPONDYLITIS, DISEASE ASSOCIATION TESTING
Specimen Container Lavender Top
Specimen Type Whole Blood EDTA
Turn Around Time
Days Performed
Reference Range Contact Laboratory
Alternate Specimen
Volume 2 mL Whole Blood
Stability Ambient Preferred
Stability Refrigerated N/A
Stability Frozen N/A
Patient Preparation
Methodology
Polymerase chain reaction (PCR)/sequence-specific oligonucleotide probes (SSOP)
Limitations
Regarding whole blood specimens, an adequate test requires the presence of intact lymphocytes at the time of testing. Even taking appropriate precautions, an occasional specimen will not be satisfactory for testing. In such cases, fresh blood should be drawn for retesting.
Rejection Criteria
Hemolysis; clotted specimen; tube other than lavender-top (EDTA) tube
Additional Instructions
Performing Laboratory Reference Laboratory
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