Dr. Klinghardt says....
One of the reasons blood tests are so unreliable as indicators of Lyme infection is that the spirochete has found a way to infect your white blood cells. Lab tests rely on the normal function of these cells to produce the antibodies they measure.
If your white cells are infected, they don't respond to an infection appropriately. And the worse your Borrelia infection is, the less likely it will show up on a blood test. In order for Lyme tests to be useful, you have to be treated first. Once your immune system begins to respond normally, only then will the antibodies show up. This is called the "Lyme Paradox" – treatment before diagnosis.
More info from other Drs here---->http://articles.mercola.com/sites/articles/archive/2012/10/13/under-our-skin-documentary.aspx