Does a faint line on a pregnancy test always indicate a non viable pregnancy?

Jessica • 29 y.o living in NY married to my amazing hubby on 6/7/14.

How many ladies have received a faint line on a home pregnancy test and never have a problem with their pregnancy and had a healthy viable pregnancy meaning no miscarriage or no chemical pregnancy?

I'm just wondering if faint lines always indicate an impending chemical pregnancy or miscarriage?