Re: Describe low risk HPV and another question.
High-risk are those strains that can go on to cause cancer. Low-risk strains don't.
HPV is not usually checked for during STD tests. It is usually diagnosed from a PAP test/swabs for women and swabs for men (high risk), or a visual + vinegar solution wash for men and women (low-risk/warts).
STD testing is not like it's one test, they have to test for everything individually so it's actually a bunch of tests and HPV is not usually among them, unless it's specifically requested.