That's a good question. I can imagine that there was a time before there was life on Earth, and then clearly there was a time X-hundred thousand years or a million years later when there were things that we would all recognize as biological.
What Causes High White Blood Cell Counts? White blood cell counts are elevated when the body is fighting an illness or disease, so a high count is indicative of an infection. Often, your doctor will order another round of tests after he or she determines you have a high white blood cell count.
High WBC Count Causes. An elevated white blood cell count can arise due to many medical reasons. High WBC count usually means there is increase in production of these cells to fight a possible infection. It may also means it is a reaction to a drug that helps in improving the WBC production.