Blood work HCG question

KAY

So I know I implanted 9 DPO. I had a faint positive that morning. Then 10 DPO I got my BFP. Tomorrow I will be 12 DPO…I’m certain my DR will send me to get blood work done…so my question is…will it show pregnancy in the blood work on 12 DPO?? Or should I wait a few more days to let it build up?

It’s been seven years since I’ve been pregnant & I cant remember anything honestly. This is the first time I’ve caught a positive so early on.