Thanks, RedLabel, I received your email.
The IgM+/IgG- results were from blood tests from my MD in Norway, included as part of a larger blood test panel. He has never referred to them specifically as an ELISA test, so I am unsure if that is what they are. There is one line item for each IgM and IgG, that reads something like: "IgM Anti-Borrelia", followed by a number for my measurement, then a reference range for the threshold of what is considered "positive." These IgM/IgG results are just 2 lines in the middle of lab results for everything else: vitamin tests, allergy tests, c. pneumoniae, mycoplasma, EBV, etc.
Do these sound like ELISA?
If it makes a difference, the bloodwork was done at Furst Laboratories: http://www.furst.no/