Update

Basically just a waiting game now. Still no obvious reason for the elevated liver enzymes, so we'll have to wait until the infectious disease lab results come back - another 24-48 hours. Luke will stay on the IV antibiotics/antivirals in the meantime. Ultrasound of the liver showed no problems. Luke still seems to be feeling ok, and had good weight gain today. The doc did warn us that it's just one point and we're more interested in seeing a trend over multiple days.