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.
A high count indicates the presence of inflammation in the body. Because white blood cells are calculated by the number of cells per volume of blood, test results can vary between labs. Different labs use different degrees of measurements for the 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.