There are 3 chambers to the device. Only Progressive Motile Sperm Cells can swim successfully from chamber #1 (the Sample Chamber) into chamber #2 (the Separation Chamber). There, your Progressive Motile Sperm Cells are stained with a dye which produces the color in chamber #3 (the Detection and Result Window). The more Progressive Motile Sperm Cells in your semen sample, the darker the color in the window and the higher your ProMo score. Remember: A Progressive Motile Sperm Cell is the only kind that can fertilize an egg.

Yes, the following can destroy your test result:

  • Taking the test too soon after your last ejaculation (should be at least 2 days after, but not more than 7)
  • If there is not exactly 0.5 mL of the semen sample collected in the syringe
  • Not keeping the device steady on a horizontal surface throughout the test
  • If there are bubbles in the semen sample when put into the device
  • If the device is shaken during testing
The test result should be read within 5 minutes of pulling back the slider. The result may become unreliable if left longer. It is recommended to take a picture for documentation within 5 minutes. After that, the test result in the device will no longer be valid.
It takes 72 to 90 days for new sperm to develop and be ready for ejaculation. So, even if you implement lifestyle changes, you may not see dramatic changes for 2–3 months. However, it is possible for your score to improve month to month.