IgA accounts for 10%-20% of the total serum immunoglobulin and can be divided into serotype and secretory type. Secretory IgA is the major immunoglobulin in exocrine fluids such as colostrum, saliva, tears, intestinal secretions, and bronchial secretions. Therefore, it plays an important role in the first line of anti-infective defense, especially in the respiratory tract and intestines, which can be called "local immunity." Reference value: immunoturbidimetric method Radioimmunoassay method (RID method): Adult: 760-3900mg/L (76-390mg/dl), the specific reference value depends on each laboratory.
(1) Elevation is more common in: IgA multiple myeloma, systemic lupus erythematosus (SLE) sarcoidosis, rheumatoid arthritis, Behcet syndrome, portal cirrhosis, some infectivity Disease, eczema, thrombocytopenia, Wiskott-Aldrich syndrome (multiple infections of eczema thrombocytopenia), chronic bronchitis remission period, etc. Secretory IgA between 500-2500mg / L is a serious condition, the course of the disease is <500mg / L. Recall that you did not pay attention to the following matters before taking blood? 1. Eat too greasy, high-protein foods and drink plenty of alcohol the day before the blood draw. The alcohol content in the blood directly affects the test results. 2. After 8 pm on the day before the medical examination, you should start fasting for 12 hours to avoid affecting the test results. 3, should relax when taking blood, to avoid the contraction of blood vessels caused by fear, increase the difficulty of blood collection.
Take it easy.