My feeling is no, it is not on-topic, although this didn't really occur to me until your question prompted me to think about it.
I'm guessing that narrowing the scope of this site is not the only motivating factor behind avoiding the topic of medical advice. It also has to do with protecting ourselves from any possible liability for a human life based in the case that bad medical advice from this site caused human injury or death.
I'm guessing that it hasn't gotten any close votes because on first encounter, it doesn't "smell" like other medical advice problems (human subjects, "should I...?", etc). But ultimately, you are correct, this is a medical advice question that should not be on-topic for this site, both for sake of scope and for sake of liability.