Many men, faced with the prospect of going to the doctor for a fertility evaluation, will tell you: they would rather just stay home.Now they can.A new at-home screening test, called Fertell, lets couples find out if they have fertility problems without stepping into a doctor’s office. The test has his and hers components — a screening test for men that is the first at-home device to measure the concentration of motile sperm, and a test for women that measures a hormone considered a marker of egg quality.