A: I came to this lab to have my blood drawn. B: You are in the right place. Roll up your left sleeve and have a seat. A: What am I being tested for? B: Your doctor wants to know what your white blood cell count is. A: What does my white blood cell count tell him? B: Usually if your white count is off, the doctor suspects an infection. A: How much will it hurt? B: It is only a pin prick. I have to put this tourniquet on your arm to make the vein easier to find. A: Is that my blood going into that tube? B: That blood that just filled the tube is all that I needed. Thanks for coming in!