Each laboratory has their own reference ranges, do you have the ref range? Or do you know if this amount was high or low?
I know a higher than normal amount can mean B12 deficency. Lower might mean iron deficency or Thalassemia, an inherited blood disorder.
ALT & AST are liver enzyme tests. The liver is a cranky organ, something as simple as taking too much Tylenol that week can elevate liver enzymes.