No, you can't.

An at-home DNA test doesn't test whether you have cancer* - it tests your chances of getting one over your lifetime.

For some people, for example, there will be an 80% chance to get breast cancer during their lifetime, and they should start checking themselves often.

* One exception is a colon cancer test - you can send (apologies) a swab of your poop to test it for mutated DNA that is present if you already have early colon cancer.

See another doctor. Have a biopsy. Don’t stuff around with genetic tests, as they’re not going to give you the information you want in this situation (whether you have a cancer rather than whether you’re likely to develop one).

I had the same thing. Got it removed. Fortunately was nothing.

Seek second or more opinions. Hard lesson I learned a few years ago is just because it’s a “professional” advice doesn’t mean it’s good/best advice. So now on with doctors, lawyers, other “specialty professionals” I don’t blindly accept one guy’s call.