Whats a reliable test for Lyme disease?

Many tests. There are many tests for lyme disease, but none are totally reliable. The elisa test is positive in about half of those infected. The western blot test is positive in ~70% of cases, but most labs don't do a thorough enough version- i recommend igenex labs. Pcr tests are positive only ~20% of the time. A new test, a culture by advanced laboratories may detect lyme in >80% of cases so may be best.
Western Blot Analysi. A western plot analysis which looks at at least 5 and sometimes 7 individual preciptins. You must have three positive for a definitive dx.