U.S. Sen. Elizabeth Warren accused President Trump of being “creepy” last night for saying he’d like to give her a DNA test himself to prove her Native American heritage as the likely 2020 rivals clashed.

“He’s trying to do what he always does to women who scare him: call us names … shrink us down to feel better about himself,” Warren tweeted.

Her quick attack came hours after she released a report from DNA analysis company 23 and Me and an accompanying video about her claims of Native American heritage, which have long dogged the senator. The reports say it appears she has a Native American ancestor six to 10 generations back, which would make her between 1/64th and 1/1,024th Indian.

It may not win over critics, said Boston University political communications professor Tobe Berkovitz, but it could help her.

“She can now say this is settled,” Berkovitz, a longtime Democratic campaign strategist, said. “She can say, ‘I did some DNA testing — where are the president’s tax returns?’ ”

Warren’s campaign did not respond yesterday to a question about whether the report and video were released with an eye on 2020. She has said she’ll take a “hard look” at running after the Nov. 6 election.

The senator has claimed Cherokee ancestry and identified herself as a minority while teaching at University of Pennsylvania and Harvard Law School. Critics have accused her of trying to inappropriately gain advantage through affirmative action, though school officials deny it came up.

Neil Oxman, a Democratic consultant who’s worked on multiple presidential primary campaigns, said the announcement strikes him as silly, given how distant the possible native connection appears to be.

“Even some people who are good liberal Democrats like me rolled our eyes,” Oxman said.

Oxman said he doesn’t expect this to be great political cover down the road.

“In the Democratic primaries, no one is going to make fun of this because we’re so politically correct,” Oxman said. “But from the Republicans, you bet there will be.”

Geoff Diehl, the Republican running against Warren this November, reiterated his call for the senator to drop out of the race if she’s eyeing a 2020 national run.

“It just goes to show how much she’s focuses on herself — her obsession to run for the White House,” Diehl said.

President Trump loves to use the Cambridge liberal as a foil, often calling Warren “Pocahontas.”

This summer, the president taunted Warren saying he would donate $1 million to a charity of Warren’s choice if she took a DNA test. He said yesterday he wants to do that test — an offer she tweeted was a “creepy physical threat.”

— sean.cotter@bostonherald.com