Brenda,
I just wanted to ask if your boyfriend has ever taken any kind of retinoids, or used any retinoid based creams recently or in the past. You know all the acid based creams and lotions we use can and may be absorbing into our bloodstream through our skin, possibly causing our livers to work overtime to filter our blood. Both my cholesterol and liver levels were a little high when I was on accutane(keep in mind I was a skinny teenager back then) and my cholesterol has remained that way ever since. Nothing too serious, just "a little elevated". If this isn't the case, I would agree with Serena in saying to check or change his diet first. Does he drink alot, take medications that are hard on the liver, stuff like that. It's kinda weird that a doctor would want to do a liver biopsy without recommending diet and exercise first to see if that helps.
Keith.