There are a lot of different strains of Bart, so to only test for 2 and then rule out Bart based on negative results seems irresponsible. That said, most of the experts seem to think the CD57 only is suppressed in lyme, not the coinfections (anybody know of any research supporting this assertion?).
VEGF is a test that is often elevated in those with Bart., so that may be another test to try to get done.
(see http://lymepa.org/html/dr__j__burrascano_september_20_7.html ~ click through the slides to the one titled "Coinfections - sorting it all out")
I hope this helps...take care,
Chronic Lyme Disease, Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, Anemia, Lymphopenia, intermittant Pancytopenia, chronic malabsorption/malnutrition, etc.; G-J Tube; Currently TPN-dependent.
Meds: Zofran, Pulmicort, Vitamin B12 Shots, Heparin (to flush PICC line).