I have no idea. I am new to all this. I emailed him and asked all of this when I was first looking into a lyme rifer. He said it went after lyme, candida, parasites, virues, etc. I can't afford two machines. Hell, I can't even afford one, so I when I can finally save up for even one machine, I have to choose carefully. I looked at the GB4000 and they told me it killed lyme, so go figure.