The HLA-B27 looks at a genetic marker linked to spine arthritis. It is done for: young people with inflammatory back pain.
General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.
Young people with inflammatory back pain.
No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Supports ankylosing spondylitis with symptoms. Low or negative may mean: Less likely. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
A genetic marker linked to spine arthritis.
Blood
Supports ankylosing spondylitis with symptoms.
Less likely.
Reference ranges vary by lab, age and sex — always use the range printed on your own report.
Consult a doctor to interpret results — a single test does not make a diagnosis.
Uses your location once to list the nearest facilities. Nothing is stored.
What does the HLA-B27 measure?
A genetic marker linked to spine arthritis.
Why is the HLA-B27 done?
Young people with inflammatory back pain.
Do I need to fast for the HLA-B27?
No fasting needed.
What does a high or positive HLA-B27 mean?
Supports ankylosing spondylitis with symptoms.
What does a low or negative HLA-B27 mean?
Less likely.
What is the normal range for the HLA-B27?
Laboratory-specific; see the reference range on your report.
Why is HLA-B27 done?
Young people with inflammatory back pain.
Do I need to prepare or fast for HLA-B27?
No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Supports ankylosing spondylitis with symptoms. Low or negative may mean: Less likely. General information, not a diagnosis. Results must be interpreted by a qualified health worker.
SI text CC BY 4.0; decoder reference data (cited per range); LOINC codes free with attribution (notice included).
Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references