Evaluation of Some Serum Colloid Tests in Clinical Practice on Horses from the Serum Protein Picture

Abstract

Serum samples were collected from 68 clinically healthy horses and subjected to the Lugol, Hayem, Gross, and zincsulfate turbidity tests.
All the horses, except four yearlings, gave positive Lugol tests. Negative results were revealed by 91 per cent of the serum samples tested for the amount of Hayem's solution consumed in the Gross test. Accordingly, neither Lugol nor Gross test was proved to be an effective one for the liver function, although both tests reflected changes in total protein, total globulin, and beta- and gamma-globulin in the serum well.
The other two tests failed to indicate changes in the serum protein picture to a satisfactory extent. Therefore, the four tests studied gave no reliable results when applied to horses.