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.
CSF cell count: Many conditions cause changes in white blood cell count in the CSF. Normally, these are infections, especially viral infections. There are some conditions that are related to the immune system and certain cancers can cause this. Cancer normally causes a very high cell count number, however.