LeBron James is taking pride from the efficiency of his supreme scoring streak with the Los Angeles Lakers.

One day after turning 37, the NBA icon had a season-high 43 points as the Lakers routed the Portland Trail Blazers 139-106 at home on Friday.

The Lakers improved to 18-19 on the season and James extended his remarkable run of 30-point games to seven, the first time he has done that since 2013.

James is nearing his best streak of 10 such games he recorded with the Cleveland Cavaliers in 2005-06.

He is averaging 36 points per game over his seven-game stretch, making 57.8 per cent of his shots from the field.

James was 16 of 26 shooting and connected with five three-pointers as the Trail Blazers were crushed, giving him his 67th career 40-point game and sixth for the Lakers in his fourth season with the team.

"If that is what our team needs to win, I am OK with that," said James, per ESPN.

"I am not a guy who goes out and sees if I can jack up a bunch of shots. 

"The streak I have been on with my scoring I have been efficient. I take pride in that as a player."

James also became the oldest player in NBA history to have a game with at least 40 points and 14 rebounds.

Asked about that record, he added: "I don't feel like I have been in the league 19 years. When I am daily reminded of it, I feel it sometimes.

"Sometimes you do have to remind people you can still do what you can do at a high level.

"I literally try to prepare my mind and my body and my soul on how I can stay young in a young man's game.

"Because that's what it all boils down to. It boils down to putting the work in and everything else will take care of itself."

Russell Westbrook (15 points, 13 rebounds, 12 assists) recorded a triple-double for the Lakers, his ninth of the season, while there were 18 points from Malik Monk, but James was the clear standout.

Lakers coach Frank Vogel, who cleared the league's COVID-19 protocols to take his place on the sideline against the Trail Blazers, was thrilled with the veteran's impact.

"This is just LeBron James playing at a superior level more than what is happening around him," he said.

"While Anthony Davis is out, he is intent on doing everything he can to pile up wins and play at an extra-high level."

Up next for the Lakers, who had lost six of seven prior to this morale-boosting win, is a home game against the Minnesota Timberwolves (16-19) on Sunday.