If you follow a gluten-free diet you'll need to avoid autolyzed yeast extract because it's a source of hidden gluten, according to Colorado State University. Another possible concern about consuming autolyzed yeast extract is that it naturally contains monosodium glutamate.f you follow a gluten-free diet you'll need to avoid autolyzed yeast extract because it's a source of hidden gluten, according to Colorado State University. Another possible concern about consuming autolyzed yeast extract is that it naturally contains monosodium glutamate.
Test Result: A test sample is considered to contain ASO antibodies in excess of 200 IU/ml when agglutination (clumping) is observed when compared to the result of the negative control. The test principle, procedure and interpretation presented here are based on Latex Anti-Streptolysin O (ASO) test. The presence of Anti streptolysin O antibodies in serum can be indicated by seeing the ability of serum to neutralize the hemolytic activity of streptolysin O reagent (antigen).
The ASO test is primarily used to help determine whether a recent strep infection with group A Streptococcus 1  : Is the cause of a person's or glomerulonephritis, a form of kidney disease.n elevated titer of antibody (positive ASO) or an ASO titer that is rising means that it is likely that the person tested has had a recent strep infection. ASO titers that are initially high and then decline suggest that an infection has occurred and may be resolving.