Colleen Yates, Labor's candidate for the WA state seat of Darling Range, has pulled out of the by-election race after questions were raised about her LinkedIn profile and education history.

Darling Range voters are set to vote for a new member of Parliament on June 23 following the resignation of former Labor MP, later independent, Barry Urban after he was found to have lied extensively about his work experience and qualifications.

But Ms Yates's campaign began to unravel this week after it emerged she had listed an "MBA" from the University of Western Australia on a now-deleted LinkedIn profile, even though she had not completed the qualification.

Colleen Yates' LinkedIn profile obtained by the ABC. It has since been taken down. ( Supplied )

In announcing her resignation on Friday, Ms Yates said in a statement "the intense scrutiny that comes with politics just isn't for me".

"This has been an extremely difficult time for myself and my family."

University confirms no degree

In a candidate eligibility checklist Ms Yates provided to the Labor Party, which has been seen by the ABC, she claimed to have studied:

"Petroleum Engineering" at Fort Lewis College in 1982

"Petroleum Engineering" at Fort Lewis College in 1982 "Engineering and Architecture" at Washington University in 1984, and

"Engineering and Architecture" at Washington University in 1984, and "Information Technology" at the University of Phoenix in 2001

In those instances, Ms Yates did not indicate what qualifications she had accomplished or gained at those institutions.

But on her LinkedIn profile, she listed a Bachelor of Engineering/Master of Architecture at Washington University.

In the party checklist, Ms Yates claimed to study engineering and architecture at Washington University during 1984, but on the LinkedIn profile she claimed study between the years 1984-86.

Colleen Yates displayed a variety of university degrees on a LinkedIn page she has since deleted. ( Supplied: LinkedIn )

The ABC contacted Washington University which confirmed Ms Yates had studied at the institute for one semester, but had never graduated.

"A person by the name Colleen Michelle Yates attended Washington University in St Louis for one semester in fall [northern autumn] 1983," executive director of university news Susan Killenberg McGinn said.

"She was enrolled as an undergraduate student in architecture.

"We do not have record of a Colleen Michelle Yates graduating from Washington University."

On Thursday, Fairfax Media claimed Fort Lewis College said it had no record of Ms Yates.

The Labor Party has since provided documentation from the college that confirmed she was a student there during the "fall term of the academic year 1981-82".

'Minor mistakes will haunt me'

Ms Yates said the details on her LinkedIn account were "minor mistakes", and no different to what thousands of others had done.

But she admitted they would have ongoing repercussions.

A copy of Colleen Yates' LinkedIn summary obtained by the ABC. The online version has been removed. ( Supplied )

"How I portrayed myself on my LinkedIn account is, in my opinion, similar to how thousands of people would input their data on the online service," she said.

"However, these minor mistakes will now haunt me for the rest of my life.

"I regret any anguish that the events of the last couple of days may have had on my family, the Darling Range community or the WA Labor Party."

The Labor party continued to stand by Ms Yates during the week, with state secretary Matt Dixon calling her an "outstanding candidate" who had made some "minor errors" on her LinkedIn page.

But on Friday, members suddenly refused to be drawn on the unravelling situation.

After Ms Yates resigned, Treasurer Ben Wyatt admitted it was not an "ideal" situation, and there was "clearly" a problem with the party's vetting process "in this scenario".

"We need to make sure we get that right," he said.

In a tweet, Labor leader Mark McGowan said he respected Ms Yates's decision.

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The WA Liberals said the people of Darling Range deserved an apology from the McGowan Government.

"The Labor Party refuses to face the truth, they defend people up until they are totally indefensible," Liberal MP Tony Krsticevic said.

"It's an absolute disgrace."