The most invasive part is that they send the results to your employer. I initially balked at this, but you effectively don't have a choice if you want to work a

The most invasive part is that they send the results to your employer. I initially balked at this, but you effectively don't have a choice if you want to work at a big company in Japan, although it's worth noting the legal requirement is on the employer to get the tests done, not on the employee to do it.