Endocrine Abstracts

Background: Indirect methods is developed to estimate reference limits from patient data, i.e. data from a mix of sick and healthy people. The indirect methods use a large number of results. A prerequisite for the methods to work satisfactorily is that the proportion of patients is not too large (typically < 20-30%).Methods: We used direct and indirect methods for estimating reference limits for TSH, FT4, FT3, total T4 and total T3. All analysis were...