IGeneX will not, to my reading and understanding, produce a false positive
Lyme test, because the
test is positive *only* in the presence of
Lyme bacteria: the test looks for DNA [genes] from the Lyme bacteria.
(The older tests, W.blot and ELISA, do have the problem of false negatives, but I have not heard of any of the three tests [W.blot, ELISA, IGeneX PCR] producting false positive results.