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Is a negative blood pregnancy test 49 days after intercourse accurate?
Wiki User
∙ 9y ago
There are two kinds of blood tests for pregnancy tests -- quantitative and qualitative. Assuming you've waited long enough (much less than 49 days), and the test is done properly by the lab, the quantitative test is very accurate. The qualitative blood test is about the same accuracy as urine tests. Even the home urine tests are 97% accurate. So if you took the quantitative blood test you can be very sure it's right. Even with the other tests 97% is pretty accurate. I suspect the error rate in blood labs is greater than that.
Wiki User
∙ 9y ago
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Can menstrual blood interfere with urine pregnancy test results?
Menses blood could possibly interfere with a home pregnancy kit. You can get a false positive or false negative with any testing kit. A women is better off seeing her general practitioner doctor or obstetrics/gynecological doctor for testing, pre-natal education and treatment.
Would a test be accurate during implantation?
Fertilization is when the pregnancy hormone hCG has begun production and this hormone is what is searched for by pregnancy tests (urine and blood). However, this amount can be very little and may be difficult for a urine test to pick up. You can get the best accuracy a few days after your missed period, but they (urine tests) can detect up to 5 days before the first day of your last menstrual period. There is hCG during implantation, so it does have the potential to be detected and accurate, particularly for blood tests which are much more sensitive than urine tests.
What happens to the cervix during intercourse?
During intercourse, you may feel muscle contractions, caused by the layers of muscle around the vagina that become swollen with blood when you are aroused. The penis, however, will never enter the cervix during intercourse, as it is a protective layer around the vagina.
How do you know if you are pregnant after the night you think you got pregnant?
You can't. You can get reliable results on a home pregnancy test 14 to 16 days after having sex or you can see a Dr for a blood test that can detect pregnancy a few days sooner.
If you conceived 6 days ago and you are experiencing cramping could this be implantation?
it is next to impossible to even know you are pregnant at 6 days since it takes almost a week (7 days) for the for the fertilized egg to travel down from the fallopian tube to the uterus, where the egg implants in the lush, prepared uterine lining. It is only at this time that a pregnant woman's body begins to release the pregnancy hormone, HCG and you can POSSIBLEY detect pregnancy with an at home test and then, the sensitivity of the specific test, the amount of time before your body starts releasing HCG, the amount of HCG the individual woman's body produces and the timing of the test are all factors that can delay accurate results of a home pregnancy test kit. Blood tests are usually considered the gold standard of pregnancy tests this early on because blood detects the HCG before urine does. If a urine test is really sensitive, it can often pick up at least small amounts of HCG as early as about ten days after fertilization. If you are assuming pregnancy so fast I assume you were trying and you should contact your dr. Keep in mind that pregnancy tests are only accurate if they test at the right time! As mentioned above, it needs to be at least ten days (and often longer) after fertilization to be even assumed it is correct so at earliest, you can detect is 1-1/2 to maybe 2 weeks 'along' Do you know for sure when you ovulated? Many women make the mistake of assuming that they ovulated on the mythical day 14, but you may not ovulate until, for example, day 23 of your cycle. In this case, testing through a home pregnancy test as early as day 24 would be utterly useless and a complete waste of money. I hope this helps and good luck!!!!
Can you get a negative home pregnancy test and a positive blood test?
Yes. The home tests aren't accurate and only the blood test is the accurate one.
What does it mean when you have pregnancy symptoms and he pregnancy test is negative?
You may be pregnant but took the test too early or its a false negative. A blood type is most accurate.
What does negative on a pregnancy test mean?
It either means you're not pregnant or not far enough along to detect the pregnancy hormone. A blood test is most accurate.
Could you still be pregnant if you took a home pregnancy test 4 days after intercourse and a blood test 5 days after and they both came back negative and did you just take the tests too soon?
you are best to test for pregnancy after the first day of your period being late this will then give you a accurate reading.
Can you be pregnant if you had a positive hpt 3 days after intercourse and then negative a week later aswell as a negative blood test?
The blood test are very very accurate. So you may of had a false hpt. If you only had sex the once you wont get a positive until about a week or more later. The blue dye hpt are the worse about giving false positives, but the blood test can even be used to date a pregnancy!
Is a blood test 100 percent accurate in determining pregnancy?
For most women yes. There are a few women who are pregnant with a negative blood and urine test. But very few.
After miscarriage and 0 hcg Does it make it hard for pregnancy tests to read accurate?
Hello, If you have 0 HCG in your blood, and if you conceived after this then a pregnancy test would be accurate. A pregnancy test will not be accurate if you have any HCG in your blood.
How long should you wait till take a pregnancy test after 2weeks in you tested it was negative?
Home pregnancy tests are considered accurate 14 to 16 days after ovulation. A blood test from a Dr is considered accurate 10-14 days after ovulation.
Can i blood pregnancy text be negative if you took it before you expect you period?
Pregnancy tests are almost always accurate with home tests it is more common to get a false negative then a positive if it says you are pregnant then you are.... With a blood test you will most likely always get the correct reading because your blood changes it increases and it develops a hormone that is only there when pregnant.
Is a blood test for pregnancy accurate eleven days before a period?
A blood test is accurate at any time.
Can your blood test negative for pregnancy and still have morning sickness?
No, a negative pregnancy test means the nausea is caused by something besides pregnancy.
If you were a month in a half along would a home pregnancy test be able to be negative?
I'm 14 weeks pregnant and my home pregnancy test still come out negative. Due to some woman just are not able to get an accurate result. You're doctor may recommend getting a blood test. Those are usually 100% accurate .
