(Closed) How early can blood tests detect pregnancy?

posted 7 years ago in Babies
Post # 3
7587 posts
Bumble Beekeeper
  • Wedding: December 2010

Ahh this is me! I got my last period on June 24th! I have taken 4 HPT and nothing, but I have all kinds of symptoms, however I am afraid I’m reading into things. My midwife is sending me for a blood test on Monday if I don’t get a positive then. She said a blood test will show pregnancy even before a pee test.

Post # 4
3148 posts
Sugar bee
  • Wedding: February 2010

I took a pregnancy test when I was 5 weeks along, and it came out positive. in fact, the hormones were so strong, it only took 30 seconds for that pink line to develop, and that wasn’t even my morning pee! (sorry tmi)

not sure how much earlier you can take it, but I’m sure it says on the box?

Post # 6
959 posts
Busy bee
  • Wedding: July 2009

Some people need blood tests to confirm pregnancy. A friend of mine has never gotten a positve pregnancy test but has been pregnant twice- both times had to confirm through bloodwork. 

ETA: I just realized I didn’t even answer your question. I meant to also say that I believe as soon as any trace amount is present, it will be detected. They may want you to come back to see if it’s doubling if it is a very small amount, but regardless, it should be able to tell you. 

Post # 7
5655 posts
Bee Keeper
  • Wedding: April 2011

a blood test can usually pick up hormone just a few days after implatation… So about 9-10 days after you O.

Post # 8
1200 posts
Bumble bee
  • Wedding: October 2010

I think from what I’ve read, implantation should take between 6-12 days after conception, and the hormone should show up in your blood 2-3 days after implantation, and show up in your urine 2-3 days after that. So, you could get a positive blood test as soon as 8 days after ovulation, or as late as 15 days. If implantation took the maximum amount of time for you and you didn’t ovulate until 7/25, then it’s possible that even by now there wouldn’t be enough of the hormone in your blood for a positive test, even if you truly were pregnant.

Ovulating on 7/25 though would mean ovulating on day 33, which would be a 47 day cycle- have you ever had such a delayed ovulation before?

For what it’s worth, I took a pregnancy test in mid Jan, when I would have been close to three weeks pregnant (as in, 3 actual weeks, not merely counting from last period), and got a negative.

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