High titers — that is, 400 units or more — were present in 89.7 per cent of the patients with carditis and in 80.9 per cent of those without carditis. Very low titers (less than 159 units ...

Low titers are oftenest found in late syphilis and high titers oftenest in early cases, but there is so much variation that routine quantitative reactions are of little value in differentiating ...