Meanwhile, if I suspect that, for example, that my BMI veers into the obesity range when my TSH is high, it should be perfectly fine for me to try and get a $50 test to examine if there's a correlation. Better than spending that on a DVD of Keeping Up With the Kardashians, don't you think? Might even increase awareness about general health in the US.
LabCorp made (income) $600 million last year. Quest made $1.5 billion.
They can afford teams of very capable developers. They can have the best software, the best presentation, slick mobile apps, speedy information systems.
They don't not because they can't afford it, but because they don't want to afford it. As is the case with many of these companies that get disrupted by tech startups, they see it as a cost center and minimize it.
Software rules the world. Any business that doesn't adapt to this will see strange little upstarts steal all of their thunder.
Regarding your point on Bayes Theorem, that's valid in some ways and invalid in some ways. Suppose someone gets a vitamin D test back at 8 ng/mL. There's not really a chance of a false positive. He's deficient and needs supplementation. Making the test cheaper, faster, and more accessible can really only improve the health of the population. It will likely also drive down the cost of healthcare overall, because vitamin D deficiency has all sorts of unpleasant effects.
Furthermore, the literature suggests that the vast majority of doctors do not understand Bayes Theorem. Source: http://yudkowsky.net/rational/bayes
There is maybe some marginal streamlining or process improvement possible, but you can already get blood drawn and a little while later have the results accessible on a mobile device. Sure, maybe the blood can be processed faster and those results should be available sooner and available to outside parties so you can use various apps and services; but that a policy and political problem, not really a technology challenge.
This company is just another one of those paper tiger companies... or maybe paper unicorn is a better metaphor ... who make something that is wholly unnecessary and the only thing they are good at is manufacturing buzz. Their technology solution seems to be an unnecessarily complex solution to a simple problem. We don't need to "know what your body is doing so you can live a healthier life", we just need to eat better and exercise far more. It's that focus on symptoms rather than causes that annoys the heck out of me. But I guess they have learned from the perpetual dependency model. You don't get to be a paper billionaire by telling people to stop being unhealthy, you become a paper billionaire by selling unnecessary stuff.