Wal-Mart could make a huge retail splash by expanding on their medical clinic idea. The best bet would be to have a “medical caravan” that would do a very detailed medical analysis of people lasting 1-2 hours.
Medically, “the works”. Before the caravan arrives at a given Wal-Mart, people interested in a comprehensive medical survey would get their paperwork and packets for a stool sample, DNA sample, and hair sample, which they would bring in on their scheduled day.
When they arrived they would present their paperwork that would be inputted while they were giving a urine sample, blood pressure, height, weight, eye color, blood samples, saliva sample, skin sample, fingerprints, footprints, retinal scan, getting a full body X-Ray and other scans, then they would do mobility tests, neurological tests, vision, hearing, odor tests (now being used to diagnose several diseases), get a full allergy panel, and likely a bunch of other tests.
The blood samples alone would also be comprehensive, checking levels of liver chemicals, hormones, metals, semi-metals and nonmetals and salts, vitamins, and looking for any number of other chemical tags, disease indicators, etc., etc. Then the DNA analysis would also expose all sorts of other information.
With such a survey like that, future medical analysis and diagnosis would be substantially easier and far less expensive.
By doing hundreds of people in a day, Wal-Mart would also become a powerful source for medical research, which is very profitable.
If they could cram all that in then give you a printout of everything that has advice on what to do for under $100 that would be spectacular.
Particularly if they market the data: Imagine diabetics receiving mailings from drug manufacturers (at the same time insurers are sold list of persons to screen for pre-existing conditions).
IMO, the market for people looking for a detailed self-DNA analysis and those who shop at Walmart are mutually exclusive.