Can hcg be produced and detected before implantation?

Answer 1

AnswerI don't usually answer this stuff but I felt I had to do so. According to the ER doctor I saw when I had my miscarriage in April, hCG is produced shortly after implantation. Enough is not produced, however, during the travel from fallopian tubes to uterus to detect on any HPT. After implantation occurs is when the hCG begins to double every 48-72 hours. Once it begins to increase exponentially after implantation is when there is enough metabolized into the urine for a home pregnancy test to be accurate. The rate at which a woman's body metabolizes the hCG from the blood stream to the urine is different for each individual and for every pregnancy within the individual. No two pregnancies are alike, even within the same woman. If you have a positive test, implantation has occured or you have lingering hCG from a miscarriage. If implantation does not occur in the two weeks between ovulation and your period the corpus luteum dies off, stops producing progesterone (responsible for all symptoms in early pregnancy which is why you cannot tell the difference between PMS and early pregnancy) and you get your period. During the first few weeks after implantation you will not be able to see a pregnancy at all on an ultrasound. That is why you're first prenatal appointment is at or after 6-8 weeks. Also, much can go wrong in early pregnancy and many pregnancies do end in miscarriage before a woman has her first appointment. Oftentimes women have no clue they even conceived because some end so early. If you get a positive HPT call your doctor immediately and follow it up with a quantitative (beta) hCG blood test. These are more accurate in that they measure how much hCG you have instead of simply answering "yes" or "no" like a qualitative serum blood test does or an HPT. Note: A qualitative blood test simply involves the blood serum being separated then dropped onto a urine pregnancy test with the same mIU as most tests: 25. This is why you can be pregnant and get a false negative blood test: because they didn't measure how much, just yes or no.