Armin is a good lab - but they only use approved tests from recognised manufacturers
and so far there are no generally available tests for bartonella that are very good at detecting it
i had been sick since 2015 - and i was tested by Armin labs in Germany for bartonella in 2019 -
and the results were negative
however, this turned out to be a false negative - as here are some images from my blood smears slides stained with Giemsa in 2021
only bartonella causes these rings of pale vacuoles in infected red blood cells - so the finding is definitive for bartonellosis. - you can also see the same abnormal blue fragments and pretty sever platelet aggregation in my blood as in a confirmed Bartonellosis patients blood
the leading expert in Bartonellosis believes standard serological tests are probably in the region of only 25% sensitive
this paper by Breitschwerdt and team shows how poor most test methods are ( the papers comparison is in dogs - but its works the same in humans )
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8308881/
this is where specialist labs come in
i believe igenex is accessible from Germany - possibly Galaxy also - blood samples can be fedex'd - but you could contact them to ask for teh specifics
the igenex test is a multispecies immuno blot or western blot - it is still a serology based test - but it uses many antigens from multiple species - thereby increasing the chances of detection
the galaxy test is the most advanced - it uses a special culture medium based on insect lymph fluid that bartonella likes, to culture the patients blood samples in to multiply any bacteria - and then runs digital droplet PCR test on the resultant culture - they also sample the patients blood 3x to increase the chance of getting bacteria to culture ( you can see the lengths they have to go to to get enough bacteria in the sample to be reliably detected ) they did also publish a peer reviewed validation study for this test in one of the medical journals.
unfortunately 8 weeks of even IV drugs is not guaranteed to cure Bartonellosis
doctors specialising in treating this disease often do so with combinations of antibiotics - minimum 2 diff antibiotics - like Clarithromycin and Rifampicin - and up to 4 different antibiotics for up to 2 years (more in complex cases)
8 weeks of a single IV antibiotic might well be enough to knock back the infection and gain some symptom relief - but the infection is prone to relapse if not treated enough - so if you do in fact have bartonella - its quite possible if not likely that this has happened
as another example - i took 6 months of combined oral doxycycline, azithromycin and rifampicin the year before the slides above were taken - i had some improvement - perhaps 25-30% more function than before abx - but relapsed over the following months.
this paper from Johns Hopkins university goes some way to explaining why bartonella is so hard to treat -
after logarithmic growth the bacteria forms persister type cells that are in a very low metabolic state - so not taking in nutrients etc from their surroundings - and this makes them very hard to kill with standard antibiotics - and the ones that work for growing cells tend not to work well for persister cells / stationary phase growth
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6628006/
bartonella are also intracellular - and the concentrations of abx that get inside the cells membranes are lower than outside - so again this gives the bacteria a survival advantage
in my case i also tested positive for lyme at Armin - which is common in people with bartonella - so treatment is more difficult.
testing for lyme or other tick born infections is worthwhile if you find bartonella - as having one arthropod born infection increases the probability that you may also have another - as it is very strong evidence of arthropod born bacterial transmission - and many of these biting things carry more than one infection. It also affects treatment decisions. The lyme tests are actually better than the bartonella ones !
its a rabbit hole into another world - but so far i am around 50% recovered to my former high functioning self - better on some days.
the youtube video i posted is a great primer on the topic - you will see those guys are proper medical professionals - not cranks pumping out clickbait.
sorry for the brain dump - i know its a lot to take in - and i feel its important not to simply proffer opinion as everybody on the internet has one of those and they are not always helpful, so i try to present authoritive sources to support what i am offering
hope this is of some help