PT - JOURNAL ARTICLE AU - Kate M Evans AU - Jamie Smith TI - Complicated hypothyroidism? AID - 10.7861/clinmedicine.7-4-419 DP - 2007 Aug 01 TA - Clinical Medicine PG - 419--420 VI - 7 IP - 4 4099 - http://www.rcpjournals.org/content/7/4/419.short 4100 - http://www.rcpjournals.org/content/7/4/419.full SO - Clin Med2007 Aug 01; 7 AB - A negative investigation does not necessarily indicate the absence of pathology. The pre-test clinical probability, and test sensitivity and specificity must be borne in mind when interpreting the result of any investigation.