if the line was there, befor the indicated time, its very unlikely to be an evap line. you are still quiet early cd23, so it is common to get a faint line when testing early. i do know that hcg doubles every couple of days, so keep testing or make an appoinment to see you gp. i just found out im pregnant, and im atleast 12 weeks, i got my first real positive on monday, after blood tests come up negative 3 weeks ago...
good luck

from georgette