May be useful in immunization/vaccination trials or may aid in the clinical diagnosis of diseases strongly associated with the HLA-A locus.
Polymerase Chain Reaction/Sequence Specific Oligonucleotide Probe Hybridization
Lavender (EDTA), pink (K2EDTA), or yellow (ACD Solution A or B).
Transport 5 mL whole blood. (Min: 3 mL)
Specimens collected in green (sodium or lithium heparin) tubes.
Ambient: 72 hours; Refrigerated: 1 week; Frozen: Unacceptable
Background Information for HLA-A Genotype
Purpose: For immunization/vaccination trials or to aid the clinical diagnosis of diseases strongly associated with the HLA-A locus.
Methodology: PCR followed by Sequence Specific Oligonucleotide Probe Hybridization of HLA-A locus.
Analytical Sensitivity & Specificity: Medium to high resolution of HLA-A locus.
Limitations: The presence of a disease-associated HLA combination does not establish a diagnosis. If fewer than 2 alleles are reported for a locus, the patient is likely homozygous. Rare diagnostic errors can occur due to primer or probe site mutations. This test is not sufficient for comprehensive HLA evaluation for clinical hematopoietic stem cell transplantation; for pre-transplant allele matching, consider HLA Class I (ABC) by Next Generation Sequencing (ARUP test code 2011264) and/or HLA Class II (DRB1 and DQB1) by Next Generation Sequencing (ARUP test code 2011272).
Occasionally the specific allele cannot be determined; in this case, the most likely allele assignment is made followed by a sequence of letters indicating other possible allele assignments. Interpretation of allele codes can be found at <https://bioinformatics.bethematchclinical.org/hla/alpha.v3.html>.
Counseling and informed consent are recommended for genetic testing. Consent forms are available online at www.aruplab.com.
Compliance Statement C: For human genetic inheritable conditions and mutations. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.
Counseling and informed consent are recommended for genetic testing. Consent forms are available online.
Order this test for single antigen HLA-A identification. Please specify antigens.
|Component Test Code*||Component Chart Name||LOINC|
|2002790||HLA Class I, Locus A*, Allele 1||38548-4|
|2002791||HLA Class I, Locus A*, Allele 2||38548-4|
|2006985||HLA-A Genotype Interpretation|