a friend of mine is recently warded in a hospital overseas. apparently due to dehydration (she hardly had any water/food and had lots of alcohol 20 hrs before her flight).
she texted me saying she had a high level of leukocyte
leukocytes are a type of white blood cells. Depending on how high they are depends on how much of a concern it is. since she's dehydrated - it might even be falsely elevated.