2007-11-08 01:07:20 · 2 answers · asked by KLJ 1 in Health ➔ Women's Health
By quantitative blood test you can know in as little as 72 hours.
The numbers for hCG start to increase right away and roughly double every day. Day 1 the level might be 1, then 2, then 4, then 8, then 16, etc.
By the time you get to when your period should have started it's been ~14 days and a urine HPT is accurate enough to tell if you are pregnant. There are some HPT's that claim they can tell 5 days before your period is due, but that's borderline and you wouldn't trust the result anyway, and you would use more of them (resulting in more sales for the co.).
Believe it or not, you could conceive and get a confirmation via blood test (at ~ 3 days) and the embryo might not find a good place to implant and then it would pass and you would never know that you had conceived if you hadn't had a quantitative test so early.
2007-11-08 07:11:59 · answer #1 · answered by Rush is a band 7 · 0⤊ 0⤋
hehehhe...normally 2-3 months.
2007-11-08 09:26:34 · answer #2 · answered by ovdemonz 2 · 0⤊ 1⤋