If you're looking for medical testing you're better off getting specific tests for what you're looking for.

As you have no guarantees that you won't get errors or no-reads on the SNP you care about and you won't get the QA process the consumer companies have.

If you've got specific medical concerns would strongly recommend you speak to a professional medical genealogist, as it's super easy to misinterpret data unless you've got a background in this space.