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.
Causes of an Elevated White Blood Cell Count Photo Credit: fotoquique/iStock/Getty Images White blood cells (WBCs) are the foot soldiers of the immune system. They help fight infections, limit injury from other harmful substances, and initiate healing if tissue damage occurs.