Doctor insights on:
Hcg 4 Weeks After Intercourse
Had 2 Beta HCG test 4 and 6 weeks after intercourse (took plan B morning after). Both results were less than 2. Can I still be pregnant?
Unlikely: It is unlikely that you are pregnant with two negative beta subunit tests ...Read more
No: Hcg is not secreted until implantation which is 5-10 days after fertilization. If you have a positive result that quickly you were already pregnant. ...Read more
Are there rare cases where hCG can rise extremely fast to get a positive test result the day after intercourse?
Yes: It's within the realm of normalcy.Get a more detailed answer ›
Did a hCG bloodtest 39days after intercourse. Is it to early to test. Came out negative. Did not start period yet.
Not too early:
Should really be positive by then if it is going to be.
Periods can be late for other non-pregnancy reasons. ...Read more
I had a quantitative hCG test done and my results were <1. What does that mean? I had it done 3 weeks and 2 days after intercourse.
U r NOT pregnant: This long after intercourse the ball of cells would have implanted in the uterine wall and have been pumping out ever increasing amounts of human chorionic gonadotrophin. The fact that the assay could not even detect even 1 unit implies that you have no functioning placenta growing - i.e. no pregnancy! ...Read more
Non pregnant level: Hcg of 1.1 is a non pregnant level. However, you need to test once you miss your cycle, not in relation to intercourse. ...Read more
Can hCG levels rise to 634 only a few days after intercourse? Implantation can't occur this fast...?
Would fertilization and implantation happen within 3-4 days after intercourse to have an hCG level of 634?
When should I take blood quantitative beta HCG test after intercourse/sex? Is it accurate enough if I do that 2 weeks after intercourse/sex?
It depends...: A blood test is fairly accurate about 7-10 days after intercourse. Qualitative (not quantitative) blood tests are usually used to detect pregnancy. Home urine pregnancy tests are about 99% accurate if it has been one week since a period was missed. They may detect a pregnancy earlier than that but are less reliable to rule out pregnancy. ...Read more
When does the smallest, undetectable amount of hCG start to be produced after intercourse? (pregnancy related hcg).
Accuracy trumps time: Quantitative blood (serum) tests detect HCG levels at 1 miu/ml. This must be ordered by a doctor. Urine tests advertise detection thresholds between 20 and 100 miu/ml, but this depends on the brand. Qualitative blood tests generally have a threshold of 25 miu/ml, and so are less sensitive than some available home pregnancy tests. Time is less important that accuracy and confirmation by physician. ...Read more
How fast-or how many days does it take for hCG to be produced for it to show up in a urine home pregnant test? Would a day after intercourse be too soon?
At menses: Since most home urine pregnancy tests detect the HCG at levels above 25-30, and HCG levels are approximately 100 at the time of expected menses, a home test can usually detect a pregnancy 1-2 before expected menses. Blood tests are more sensitive detecting HCG levels above 5. ...Read more
6 months after intercourse, hpts are negative, blood HCG is negative, and ultrasounds show nothing. Could I still be pregnant?
Is it weird that a doctor would say that an hCG level of 634 is within range of 3-4 days after intercourse and is consistent with fertilization?
No: Congratulations. It is consistant with very early pregnany which implies fertilization took place. ...Read more
When is it 100% dead sure that I am not pregnant after getting result of beta HCG <0.1mIU/ml? Like 3 weeks after intercourse or 4 weeks or 5 weeks?
I have an irregular cycle. How many days after sex can I take an HCG blood test for accuracy? My level was 'less than 1.2' 13 days after intercourse
About two weeks: You can take a pregnancy test about two weeks after to determine if you are pregnant. ...Read more
I'm confused:some doctors say that an hCG level of 634 is possible only a few days after intercourse? Others say no it would be a week +into pregnancy
Not possible.: It's impossible for HCG to be detected in the blood until after the embryo implants into the lining of the uterus. This happens at about 7 days after conception. For the first few days after conception, the embryo is free floating. There is no way to detect a pregnancy until implantation occurs. You'll need to use your judgement about which answer seems correct. ...Read more
Positive pregnancy test the day after intercourse then hCG levels were 600ml/iu 2 days later? Pregnancy this soon?
Can hCG be produced the day after intercourse? Would a urine home pregnancy test detect pregnancy this soon? If not, how soon?
Do I need to repeat quantitative beta HCG blood test if I get <0.1mIU/ml at 5 weeks after intercourse? Or can I rule pregnancy out?
If 5 weeks after sex: Pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A urine test gives a reliable result 3 weeks after last sex or 1 week after missing a period. A blood test should be positive a few days or a week earlier than that, but one need not do a blood test. Urine tests are very accurate and cheap to do. ...Read more
Positive pregnancy test the day after intercourse? (went for blood pregnant test 2 days later. Hcg levels were 600ml/iu).
Sounds like: You must've gotten pregnant before that.Get a more detailed answer ›
Would a quant hcg test be accurate 14-15 days after intercourse? <2 and doctor told me it would be accurate by now but just want a second opinion. Absolutely not pregnant?
About absolutes...: The only absolutes in life are "death and taxes, " as the saying goes. Patience is a virtue. Pregnancy tests are very accurate 3 weeks after sex. There is almost never a need to test before then. If tested less than 2 weeks after sex, a positive result is likely real, but a negative result may be due to testing too early. Thus, to avoid repeat testing, one can do her first test 3 weeks after sex. ...Read more
I had quantitative beta HCG blood test 3 weeks after intercourse. I got <0.1mIU/ml. Am I pregnant? Is it 100% sure that I am not pregnant?
Sore nipples. Period is almost 4 weeks late. I did blood hCG 5 weeks after intercourse. Result is <0.1. Does that confirm that im not pregnant?
Yes: That level confirms that you are not pregnant. ...Read more
I had a baby 4weeks ago. I had intercourse w/o protection 2weeks after. Took a hpt and came up positive. Are my hCG levels atill high four weeks after?
Yes: At several weeks after delivery your blood pregnancy hormone levels are still up so a pregnancy test will be positive. The earliest time you could get pregnant after having a baby is at 4 weeks and the soonest a pregnancy test would be positive is 2 weeks later at 6 weeks. Please use some type of birth control! two babies less than a year apart would be very hard! ...Read more
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