| 摘要 |
Improved in vitro test method and apparatus for assessing thyroid function comprising mixing a microquantity of blood serum with a predetermined amount of a radioactive isotope tagged thyroid hormone solution in the upper portion of a tubular body having a fixed geometry, said body containing a column of predetermined quantity of cross linked dextran gel as a secondary binding site in an aqueous fluid held between porous discs in the lower portion of the body and having valve means at the lower end thereof, allowing said mixture to enter said column, determining the total added thyroid hormone by a radioactivity measurement, washing or eluting said column with a suitable fluid, determining the amount of hormone retained in said column by a radioactivity measurement and making a calculation based on the ratio of the amount of retained hormone to the total amount of added hormone for the particular thyroid hormone being assessed.
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