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.
White blood cells fight off infection. They are made and stored in your bone marrow and released into your blood as needed. The cause of a high white blood cell count is usually from the bone marrow releasing some of its stored white blood cells into the blood or the bone marrow producing too many white blood cells.