how long after conception does it show up on a pregnancy test if you dont have a regular period?
This is another advantage to taking the blood test: You can take it sooner than the urine test. Typically, a urine test won't show positive results until two weeks after conception or the first day after a missed period. In contrast, you can take a blood test and get an accurate result within 7-12 days after conception because it will detect the smallest amounts of hCG.