High Urea Levels

♚NAS♚ • Born in South Africa.. happily married.. 2 baby boys under two years.
Okay .. so my husband just got of the phone with my FIL .. he says my MIL is very sick and they have taken her to a few doctors which says her Urea Levels are high .. I've never heard or experienced this before .. I have Googled it. But ofcourse almost each site has the same thing... does anyone have any information on this. Please it will be a great help!