Buy a microscope and check yourself, then you can also look at bugs and hair and salt, kinda neat!
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The big question is, does it TASTE different? It might suck for your gf/wife to start rejecting her morning gargle....
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Ok so you walk into the clinic, and instead of having a brown paper bag in your hand, with the sample in it, walking next to you is your smoking hot woman wearing a sun dress. Walk up to the counter and girl ask, can I help you and you state you brought your in your semen sample. She looks confused and asks where it is and you put your arm around your woman and state, "Right here, shes keeping it warm for you". At this point your woman pulls down her damp undies from under her sundress and throws them up on the counter. Clinic girls look of shock/horror clearly visible as she faints...
Sounds like the plot to a good movie