This test measures IgA antibodies, which protect mucosal surfaces of the respiratory and gastrointestinal tracts.
Diagnostic Value: Low IgA levels may indicate immune deficiency, while elevated levels can signal chronic inflammation or autoimmune disease.
Clinical Significance: Assessing IgA is essential for understanding mucosal immune integrity, particularly in respiratory and intestinal conditions that overlap with allergic disorders.
Symptom Correlation: Deficiency may present as recurrent sinus infections, respiratory illness, or digestive disturbances.
Because mucosal immunity is critical for defending against allergens and pathogens, the Total IgA test supports comprehensive immune system evaluation.