Are evaporation lines common on hpt's?

Hi ladies! I'm new to this app and I'm very excited to see all the discussions. I'm hoping some of you can help me out here and give me some of your opinions. I'm 32 and have been ttc for 2 yrs for baby number one. My question is.. Are evap lines common on the blue dye hpt's? I've added a pic below. Is it a faint positive or a evap line?  I had 3 of these (same brand, same box) but had a negative at the drs. The nurse practitioner wouldn't give  me blood work because her test came out neg. my regular doctor has been out so I couldn't see her. So, evap line or faint positive? Thanks ladies! I look forward to your opinions.