Cool, you have a sis who's a lab tech. I worked in a lab for over 13 years and we get to know what's a normal result and what's off. It's when they get in the critical level that raises a concern. I wonder if your WBC's are low like some people with ms? Jim used to have a WBC of 4-5, yet he never got sick. Now that he's back in the "normal" stage he's sick. Go figure.