Looking for fic involving pregnancy test

[taiga13.livejournal.com]

Hello, I have a vague memory of a fic where either House or Wilson uses a take-home pregnancy test. He tests his own urine because there's a type of cancer that causes men to produce the same hormone that the pregnancy test detects. I don't remember anything else, which one did it, why, or whether it was positive or negative. Does this sound familiar or did I imagine it?