<unk>  are antibodies against a series of streptococcal exoantigens. They play a critical role in acute infections of the body surfaces, and certain organs.
Antistreptolysin O titre (AS(L)O titre or AS(L)OT) - titre of (serum) antistreptolysin O antibodies; a blood test used to assist in the diagnosis of a streptococcal infection or indicate a past exposure to streptococci. The ASOT helps direct the antimicrobial treatment and is used to assist in the diagnosis of scarlet fever, rheumatic fever and post infectious glomerulonephritis. The false negatives rate is 20-30%.  If a false negative is suspected then an anti-DNase B titre should be sought. False positives can result from liver disease and tuberculosis.
Antistreptococcal antibodies
Antinuclear antibodies
Antithyroglobulin antibody
Anti-SM antibody
Anti-smooth muscle antibody
Anti-ganglioside antibodies
Anti-cardiolipin antibodies
Antibodies