3 to 4 days after implantation, or roughly 9 to 10 days after ovulation
Both test for hCG levels; the only difference lies in that the former tests its levels within the blood stream while the later in the urine. A positive blood test will usually show a positive result 3 to 4 days after implantation, or roughly 9 to 10 days after ovulation. For a home urine test, however, a positive result will not be visible until a week after implantation or until you have a missed period. If you had a period then you would most likely only be pregnant if you had unprotected sex around the beginning of April. If you have had sex around that time, you will have to wait about a week to test. Typically pregnancy tests will show a positive about 2 days before your period is due if you are pregnant. 1 The earlier after a missed period that you take a home pregnancy test, the harder it is for the test to detect HCG. 2  For the most accurate results, take the test one week after a missed period — when the level of HCG in your urine is most likely to be detectable. 1 Take the test too early. 2  The earlier after a missed period that you take a home pregnancy test, the harder it is for the test to detect HCG. 3 1 When you use them. 2  The amount of hCG or pregnancy hormone in your urine increases with time. 3  The earlier you take the test, the harder it is for the test to detect the hCG. 4  Most home pregnancy tests can accurately detect pregnancy after a missed period. 1 Blood test. 2  This type of pregnancy test can only be done at a doctor’s office. 3  It takes longer than a urine test to get results, but it can detect a pregnancy earlier than a urine test (about 10 days after conception, compared to typically 2 weeks or more for a urine test). It is recommended that you wait until you have missed a period to take a home test. A missed period is often one of the first signs of pregnancy. If you cannot wait that long to find out and you know the day you may have conceived, then the earliest you can take a test would be 14 days from possible conception. Urine tests or home pregnancy tests are around 97% accurate when done correctly. Home pregnancy tests are great to use because they can be done at home, they are usually low in cost (anywhere from $7.99 to $19.99), private, they give a fast result, and are easy to use. Blood pregnancy tests. You can have a blood pregnancy test done by your doctor as early as 11-14 days after ovulation. After being sent to a lab for testing, the results of a blood pregnancy test can tell you two things: 1  Qualitative – whether you are pregnant or not. 2  Quantitative – how much hCG is in your blood.  Then allow 14 days for the embryo to implant and develop enough hCG to show up on a pregnancy test (96% of pregnant women will test positive by then.) Note: some HPT's say test 5 days before your period is due! or some such thing. Please note they are assuming a textbook 28-day cycle, with ovulation on Day 14. So, generally speaking, the earliest you can expect a positive HPT is 8 days past ovulation (DPO) and the latest would be about 16 DPO. It is possible to get a positive test earlier or later, but not as common. For a home pregnancy test to show a positive result, your body has to be making a detectable level of hCG. You may get a faintly positive result if you're not as far along as you thought. To be sure, take another test in two or three days. If the second positive result is more pronounced, congratulations.  Most doctors recommend that you wait until the first day of your missed period before taking a urine pregnancy test. This is usually about two weeks after conception. However, some tests are more sensitive than others and can be taken earlier. Urine tests or home pregnancy tests are around 97% accurate when done correctly. Home pregnancy tests are great to use because they can be done at home, they are usually low in cost (anywhere from $7.99 to $19.99), private, they give a fast result, and are easy to use. After testing, you can confirm results by seeing your doctor, who can perform even more sensitive pregnancy tests. Blood tests are done at your doctor's office, but are used less often than urine tests. These tests can detect pregnancy earlier than a home pregnancy test, or about six to eight days after ovulation. But with these tests, it takes longer to get the results than with a home pregnancy test. Two types of blood pregnancy tests are available: A qualitative hCG test simply checks to see if hCG is present.  Do not buy into the myth that certain urine tests can give a positive result before you have missed your period. In actuality, only 25 percent of pregnant women will receive a positive home pregnancy test 2 days before they have missed their period. If you had a period then you would most likely only be pregnant if you had unprotected sex around the beginning of April. If you have had sex around that time, you will have to wait about a week to test. Typically pregnancy tests will show a positive about 2 days before your period is due if you are pregnant.
http://www.babyhopes.com/articles/when-does-a-pregnancy-test-turn-positive.html http://www.mayoclinic.org/healthy-lifestyle/getting-pregnant/in-depth/home-pregnancy-tests/art-20047940?pg=2 http://www.womenshealth.gov/publications/our-publications/fact-sheet/pregnancy-test.html http://americanpregnancy.org/getting-pregnant/understanding-pregnancy-tests/ http://www.kidspot.com.au/birth/pregnancy/pregnancy-testing/pregnancy-tests https://answers.yahoo.com/question/index?qid=20080616113922AAQMGkn http://www.babycenter.com/6_your-pregnancy-4-weeks_1080.bc http://americanpregnancy.org/getting-pregnant/understanding-pregnancy-tests/ http://www.webmd.com/baby/guide/pregnancy-tests http://www.babyhopes.com/articles/when-does-a-pregnancy-test-turn-positive.html
how long after conception will a urine pregnancy test show positive