My husband, who has ESLD, hasn't had his labwork done in nearly a year. He isn't taking his lactulose, but drinks alcohol daily, so I know his ammonia level must be off the charts. Our dr. has never shared w/us what the 'norm' is for ammonia levels, or count, whatever they call it. Does it depend on weight or age? My husband is 61 @ about 250 lbs.