[Diagnostic staged program in thyroid diseases].

After some physiological principal remarks the modern possibilities of the in-vitro-diagnostics specific for the thyroid gland are briefly explained. The essential factors of disturbance which are necessary for the avoidance of false interpretations are mentioned. From the sequence of the description (BEJ, T4-test, T3-test, FT4-index, RIA-T3 and RIA-TSH) results the diagnostic step programme proposed by us, by means of which the majority of the functional disturbances of the thyroid gland existing may certainly be classified. Only after exhaustion of the in-vitro-diagnostics the radio-iodine-test should be performed.