TY - JOUR T1 - Complicated hypothyroidism? JF - Clinical Medicine JO - Clin Med SP - 419 LP - 420 DO - 10.7861/clinmedicine.7-4-419 VL - 7 IS - 4 AU - Kate M Evans AU - Jamie Smith Y1 - 2007/08/01 UR - http://www.rcpjournals.org/content/7/4/419.abstract N2 - 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. ER -