You can also have white cells in your urine sample from other sources, like if you've had sex before the test. I had white cells and it was because a glob of mucous fell in the cup. Sometimes bits of your mucous plug can mix in to the sample. Sometimes a little semen is left over and gets in the sample.
Peeing in a cup is hard when you're big and pregnant.
at 10:04 PM on May. 3, 2010