Glow is asking me to take a test at 8dpo. Isn't that too early?

Y • Pregnant with a baby boy due around 12/14/14 :)
I can see in my plan tomorrow that Glow is asking me to take the first pregnancy test. Tomorrow will be 8dpo and 7dpiui. My doc said to wait 2 weeks after the IUI to test. I'm confused. Thoughts?