Martin Nowakowski knows that a simple blood test helped save his life. Now the Calgary resident volunteers with the Man Van, which travels across Alberta providing men the chance at an early diagnosis of prostate cancer. “I go out as often as I can,” Nowakowski said. “It’s my way of paying back.” The Man Van was in Fort Macleod on Thursday, parked outside the curling rink during the weekly Farmer’s Market. A steady stream of men signed up for the PSA test — a blood test done in the Man Van — that helps in the early detection of prostate cancer.