[The diagnosis of clinically silent thyroid disorders].

Results of tests for thyroid function are presented in two equal observation periods. Compared with the first the frequency of TSH-determinations was doubled in the second period. Data were taken from non-selected in-patients in a general hospital. In connection to clinical information TSH determination served as the first laboratory test. Prevalence data of hyperthyroid and hypothyroid dysfunction in the patients observed are given. According to controversies in health care the efficiency and efficacy of thyroid function tests are discussed. In an iodine deficient area TSH-determination uncovers many more thyroid dysfunctions in elderly patients than expected clinically. Screening of this risk group with TSH in connection with clinical information is an adequate diagnostic procedure in an area of mild iodine deficiency.