1) Providing raw data at the lowest plan would evince more interest. It would not cost you any more.

Also, the plan should allow for ad-hoc testing at a slightly lower price as a repeat customer.

This way, I might set a baseline, and after I go through a bout of illness, I can measure myself incrementally.

2) A page with markers you provide related to a specific condition would be helpful, for example, I am genetically disposed to heart disease, and would like to keep track of those that can impact it.