HCG Levels in Early Pregnancy

During the two week wait, we are often tempted to test early, but there is always the fear of being completely disheartened by a false negative pregnancy test.

I came across this info on http://www.fertilityplus.org/ that lists out the average HCG level by days past ovulation during the TWW.

I have to question this data though, because that would mean the majority of pregnancy tests would detect pregnancy at 10dpo. Most home pregnancy tests detect HCG levels of 25. This does make me think more about testing early. What do you think?

Pregnancy Test Sensitivity

I came across a listing of how sensitive pregnancy tests are (not all tests are created equal). Sensitivity means how much HCG hormone do you need to produce to get a positive test.

It might be worth checking out. There are a tons of people that use "dollar store cheapies" while others swear by the First Response Early Result (my test of choice). First Response might be a little more sensitive but the dollar store tests seem to be at the top of the class. I was surprised to see that digitals aren't as sensitive. I figured since they were so much more money they would be better.

http://www.fertilityplus.org/faq/hpt.html

Peestickparadise.com has a list of people that reported when they got their BFP-so based on true accounts. The results show the First Response Early Result might not be as sensitive as we might think. It shows the earliest positive for FRER was 10dpo and all showed positives by 13dpo.

To me this proves that you can definitely get an early positive (before 14dpo), but is that best? What if it is a chemical pregnancy, is it better not to know?