loski01 said...
A lot of great thoughts here already.. these buggers also evolve as they reproduce/change outer layer. Could change the antibody? Hence a sudden negative as that test is a coin toss anyway lol (somebody getting that fat royalty check though!)
yep - i think this is likely what's happening a lot of the time when we see bands disappear on western blots - the organism has just rotated its outer surface proteins to fool the immune system
its also why its common to see IgM in chronic infections- to the immune system its a whole new bug it hasn't seen before - so it makes IgM to the new outer surface proteins.
i feel we have perhaps been a little harsh on the OP though
for instance if a person was testing regularly anyway due to being in studies - and they saw that each subsequent test the antibody levels were steadily dropping - AND symptoms were also improving in line
one could reasonably interpret that as some degree of evidence that their body was fighting off the infection and they were heading for remission
as we have discussed - its not proof - or definitive - but it could be taken as one data point in a kind of probabilistic calculation / assessment of what is likely to be going on.
the difficulty being that this nice regular reduction in titres in serial tests is not perhaps the most common finding for most people with lyme - but it could happen in a subset who are successfully treated.