The HLA-B27 genotyping test is a genetic test used to identify the presence of the HLA-B27 allele, a specific gene variant in the human leukocyte antigen (HLA) system. This allele is associated with a higher risk of developing certain autoimmune a...

• Positive HLA-B27: Indicates a higher genetic risk for conditions like ankylosing spondylitis, reactive arthritis, juvenile idiopathic arthritis, and other related autoimmune disorders. However, not all individuals with HLA-B...

• HLA-B27 Negative: This is considered the "normal" or typical result. Most people do not have the HLA-B27 allele.
• HLA-B27 Positive: This is outside the normal range but is relatively common in certai...

• Positive Result: If the test is positive for HLA-B27, it suggests an increased risk for HLA-B27-associated diseases. This result should be interpreted in the context of clinical findings and other diagnostic tests. A positiv...

• Blood Sample: The most common sample type for HLA-B27 genotyping is a blood sample. Blood is drawn from a vein, usually from the arm.
• Buccal Swab: Sometimes, a buccal swab (a sample of cells from th...