ANA (antinuclear antibodies), qualitative
The test detects antinuclear antibodies (ANA) — autoantibodies directed against cell nucleus components. Used for autoimmune disease diagnosis, especially systemic connective tissue diseases.
Biomaterial: Venous blood
Draw blood fasting 8-12 hours; exclude fatty food and alcohol 24 hours before; avoid stress and physical activity 30 minutes before. Inform physician of hormonal, immune, or anti-inflammatory drug intake.
- Prolonged weakness and fatigue; j
- oint and muscle pain;
- skin rashes;
- elevated temperature without obvious cause;
- hair loss;
- dry eyes and mouth;
- suspected SLE, scleroderma, dermatomyositis, Sjögren's syndrome;
- immunological test deviations.
Negative — antinuclear antibodies not detected.
Positive — ANA detected; may indicate autoimmune disease, additional examination required.
Note: Positive ANA does not always indicate disease. Assessment by physician only.
