Already a few hours after the tick-bite, Borrelia may get into the bloodstream of the host, and start disseminating. However, even in the late and severe cases of Lyme borreliosis, borrelia may be present in the blood in relatively low numbers. Sometimes only a few bacteria may be found in a whole ml of blood.
In order to investigate only the spirochetes, DualDur reagent and method separates the low-weight bacterial content of the blood and concentrates them at least 1,000 times. This is done in a safe way so the bacteria are not harmed and show normal signs of life, they even multiply.