I got a very faint positive with these tests at 8dpo. I then went out and got some first response tests because my husband didn't trust internet ones. The first response was negative on 8 dpo. I got a darker line (I could see it easily without holding it up and staring) on tests from this website on 9 dpo. I got a good line on first response on 10dpo. I have had no evaps with these. I'm a very happy customer.