Cut out the middleman

By going straight to a medical lab:

The name of one fast-growing chain of walk-in labs encapsulates the field's business model, Any Lab Test Now. The company says it can generally have testing results within 24 hours and at a cost that is as much as 80 percent less than going through a doctor. The lab franchises offer up to 1,500 tests, from a simple cholesterol check to more sophisticated packages of tests that address complex medical issues.