A Perth student has been has been found unconscious in a pool of her blood in her apartment stairwell after a night out with friends.

Mehreen Ahmad, who is a Pakistani National from the U.S. in her 30s, was discovered at the apartment on Murray Street at 2.05am on Saturday with life-threatening injuries, according to 7News.

She remains in intensive care at Royal Perth Hospital, police said.

Mehreen Ahmad, who is a Pakistani National from the U.S. in her 30s, was found unconscious in a pool of her blood on Saturday morning (pictured)

The primary education student was discovered in her Perth apartment stairwell (pictured)

Police allege Ms Ahmad, who is studying primary education, was attacked by Eduardo Santos Abrahao Filho – who she met earlier that night.

Ms Ahmad was out with friends when the group returned to her apartment, police said.

The international student then left to buy cigarettes but didn't return, officers told 7News.

Blood was later found on multiple levels of the stairwell, police said.

Eduardo Santos Abrahao Filho, 27, has been charged with causing grievous bodily harm.

He has been refused bail and appeared in court on Sunday, police said.

Ms Ahmad's family are traveling from their home in Dubai to be with her in Perth.

Police allege Ms Ahmad (pictured) was attacked by Eduardo Santos Abrahao Fiho– who she met earlier that night