In the majority of US states you can order CBC testing online and have the blood drawn at a local blood draw center (see my general overview of the process).
Take a look at my state-specific issues page if you're in AZ, MD, NJ, NY or RI.
I don't know the first thing about neutrophil and lymphocyte levels, but I saw this study that implies to me that high neutrophils and low lymphocytes are associated with bone density loss.
Mike Lustgarten suggests that red blood cell distribution width levels under 13% are optimal for longevity.
Some of the providers I found had CBCs available without "differential" (testing for types of blood cells). It looks a little cheaper depending on which provider you choose.