http://articles.mercola.com/sites/articles/archive/2000/05/21/thyroid-testing.aspxDoctors are ignoring their patient's symptoms as long as their blood work comes back in the "normal" range . However, the blood hormone levels may not always yield a correct diagnosis, with both false positive and false negative results. SecretionenCommunityServer 2008.5 SP1 (Build: 31106.3070)