Sammies, I had a liver biopsy in '93 and my experience was the same as Pink Grandma's. I had to get there before 7 AM, NPO from midnight the night before. I got no med prior to the bx except for numbing of the skin. I did get Demerol afterwards. I was in a private room in a 23-hour stay, on my right side, until 4 PM when my then-husband came and drove me home. I could sit up for the short drive. I talked on the phone some in the hospital, may have watched a little TV, but I surely wouldn't have wanted to read or been able to because of the sedation. I took the following day off from work as I was still hurting, but after that I was fine.
Hope this helps.
Maybe they've found that it's not necessary to lie on the side for so long. The purpose is to prevent bleeding.
Good luck to you and let us know the results when you get them!