Just wanted to say a big thanks to Life for the thread named
"great information I snatched from a thread by moxie08"
There is some really interesting info on there about implantation and how long Hgc levels can take to detect even on early detectors - well worth a ready ladies xxx
Some statistics: When do eggs implant?
I thought everyone would appreciate hearing some analysis from published research (sample: 136 women who became pregnant) into implantation times and HCG rates of increase during the first week post-implantation. Rather than post the science bits, I'll summarize a few key points. If you want more information please PM me. I have no affiliation with this research.
Implantation occurs for most of the women between 6 to 12 days after ovulation.
(1) Nearly all the women took at least 3 days before HCG levels were at a level that could be identified via an hpt. Many more took at least 6. Some of the women took up to two weeks!
The rate of increase (for the first week after implantation) varied considerably -- meaning that some were punctuated -- aka increased in jumps, some started slow and then rose quickly, and some increased evenly. This means you may see your lines slowly get darker or you may get lots of and suddenly a !!
Women who implanted earlier had HCG that increased faster than women who implanted later. This means that if you have been patiently seeing throughout your TWW, you may need to be even more patient. ;-)
(2) Only 40% of the women implanted by 7 dpo. Considering what I mentioned in (1), this means only 40% of women know their by 10 dpo!! This doesn't even include those of the 40% of the women who have slower or jumpier curves. So it's not hard to imagine that at 10 dpo, most pregnant women won't see a line yet.
Speaking of 10 dpo, only 68% of the women had implanted by that time. This increases to 90% by the day of expected menstruation, which still raises the point that those women still have 3-6 days before they get their .
And just so those last 10% of the women aren't left out -- it won't be until 24 dpo until the last of them even start to see the kind of HCG levels required for a !!!
Time of implantation isn't an indicator of the final outcome, either, so those that see lines at 10dpo or earlier won't be sitting superior to those that have waited. Women who miscarried had a variety of implantation days and rates of HCG increase.