Lamar Odom’s blood tests showed that he had cocaine in his system when he was found unresponsive at a Nevada brothel, according to Nye County Sheriff's Department.

The results of the blood test come as sources close to the Kardashians say 35-year-old Odom’s health will ‘never be the same’.

Nye County Sheriff's Department said that cocaine was in Odom’s system when he was admitted to the hospital in Las Vegas, and it was ‘distinctly possible’ that he could be prosecuted for drugs, a law-enforcement source told TMZ.

Blood tests for Lamar Odem, pictured here with wife Khloe Kardashia, showed that he had cocaine in his system when he was admitted to a hospital in Las Vegas on October 13

Odom underwent emergency surgery connected to pneumonia on Wednesday, and he is still on dialysis because his kidneys aren’t properly functioning, another source told PEOPLE.

‘It's two steps forward, then a step back, but it does feel like some progress is being made, little by little. There's still a black cloud, like, “OK, what’s next?”’ the source said. ‘The pneumonia was a huge setback, and now there's worry about permanent scarring of the lungs.

‘His kidneys are still not functioning correctly, but he's nowhere near strong enough to even think of a transplant, so he's on dialysis.’

Odom was in a coma for four days before being transferred to Cedars-Sinai Medical Center in Los Angeles.

He suffered multiple strokes, but is now ‘responsive but very slow’, the source told PEOPLE.

‘He can carry out simple directions, but it takes some time for him to do it,’ the source said. ‘But that's way better than he was last week, so the family is taking the good news as they get it.

‘He has wrecked his body, so it'll take time to figure out how well he can come back. But everyone knows that he'll never be the same as he was before this happened.

‘There will always be lasting effects, and doctors are just trying to minimize them.’

Odom was found unresponsive in a Nevada brothel on October 13. He was in a coma for four days in a Las Vegas hospital before being transferred to Los Angeles

It's believed Odom is currently undergoing regular kidney dialysis treatment at Cedars-Sinai Hospital in Los Angeles as he battles to recover

Odom was found unresponsive at a Nevada brothel called the Love Ranch more than a week ago, following a three-day $79-000 drugs and drink blow out with two prostitutes.

Police were told that he had used cocaine and sexual-enhancement supplements during his stay at the brothel.

He suffered several strokes and multiple organ failure, and while other organs have returned to functionality, doctors believe his kidneys are still failing.

Khloe Kardashian has been by her estranged husband's side since he was found in a critical condition on October 13.

Since Odom was transferred to LA, she has left her husband just once to attend Kim Kardashian's baby shower this past Sunday.

The couple's lawyer has successfully applied for their divorce proceedings to be dismissed in a California court as they try to patch their marriage up.

Khloe also broke her silence earlier this week, saying: 'The past week has been so difficult.

'I am so thankful to family, friends and fans, who have sent nothing but prayers and well wishes to Lamar.’

Odom's estranged wife Khloe Kardashian and her family rallied around after learning of Odom's collapse. She is pictured before accompanying him in a helicopter to Cedars Sinai in Los Angeles

Odom is expected to receive extensive rehabilitation therapy in order to improve his condition in the coming months and needs all the support he can get.

‘’Khloé is getting the updates and letting other people in the family know. They're all keeping in touch,’, a source told PEOPLE. ‘They're all keeping him in prayer. Really, Lamar is lucky to be alive, and everyone knows that.

‘We all feel like he is being kept alive for some greater purpose. No one knows how he'll continue to heal, or what his capabilities will be, but he's alive, and that's what matters right now. That's what counts.’

Nye County Sheriff Sharon Wehrly said that a worker at the Love Ranch where Odom was found described him as unresponsive with blood coming from his nose and mouth after he collapsed on October 13.

The Love Ranch owner Dennis Hof said Odom had arrived on October 10 for a four-day stay and spent $79,000 on two women who accompanied him in a VIP suite.

Odom won the NBA championship with the Lakers in 2009 and 2010 and was named NBA Sixth Man of the Year in 2011.