While the results of pregnancy tests are often poorly read, manufacturers have found an alternative unstoppable: the test USB. After putting a little urine on the strip, it must then insert it into the USB port for a software begins the process of ionization which will be used to assess hormone levels.
For a reliable result to 99%, the test comes with 20 strips for about $ 18.
more information: http://www.thinkgeek.com/stuff/41/pteq.html
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