[tomfakes]

I look at medical diagnostics as though I'm looking at my production servers (a poor analogy in many ways, but lets go with it)

Watching charts on a production server, you see patterns over time - e.g you can see a weekend, or holiday quite easily. Keeping an eye on these, you can see when things start hitting bottlenecks and you need to do something to improve the situation.

When I get my bloodwork checked, its once a year - can you imagine checking in on your production servers just once a year?

I live in the Seattle area - Vitamin D deficiency is a huge (but not well known) problem in this area. I would pay real money to see a chart of my Vitamin D levels on a daily basis (without needing to draw blood!). I can then adjust my supplement dosage as needed.

I have a food allergy that is slow to flare up and slower to go away again - being able to check various levels of things in my system to track against food intake will help me find out exactly what foods cause what issues. The US food industry would pay a fortune to have this ability not be available!