1970 Volume 19 Issue 3 Pages 149-154
The Res-O-Mat T3 test is based on the principle that the sera bound radioisotope is counted after removing free 131I-triiodothyroxine by the adsorption on the ion exchange resin. Therefore the method is antipodal to the 131I-T3 RSU test. The value is given by the ratio of the incorporation of the patient sera to that of the standard sera. The results obtained by authors are as follows: Dispersions of the TBC Index shown by the same kit for different incubation times and temperatures, periods of aging, and amounts of the sample are negligible. Dispersions of the incorporation into the sera are also negligible.
The reproducibility shows SD: 0.02 and CV: 2.0 % (N=10) . This test also shows an appreciable correlation with the triosorb test. The reproducibility and manual process of this test are about the same as the triosorb test. But it is one of the merits of this test method that the different measuring conditions including instruments do not affect ect the results because the TBC Index is obtained from the standard sera of each kit. Thus the comparison of data collected by different institutions can by made without difficulty.
