Ancestry is the only DNA service that I know of that has a Polynesian category. In discussions on other forums, none of us (I'm Hawaiian) can figure out what their criteria is for categorizing DNA as Polynesian, because people with Filipino and Vietnamese ancestry have said they were placed in it. Ancestry simply says Polynesian is "also found in" areas outside of traditional Polynesia.

At other services, Polynesians have a combination of East Asian+Oceanian, or Southeast Asian+Oceanian. Filipinos and maybe the aboriginal people of Taiwan likely have the same combination, though at a different ratio.