Adenosine Triphosphate. Adenosine triphosphate (ATP) is considered by biologists to be the energy currency of life. It is the high-energy molecule that stores the energy we need to do just about everything we do.denosine Triphosphate. Adenosine triphosphate (ATP) is considered by biologists to be the energy currency of life. It is the high-energy molecule that stores the energy we need to do just about everything we do.
1 Home tests are sometimes done too soon after the missed menstrual cycle to result in a positive test. It typically takes 10 days after a missed menstrual period before the presence of hCG can be detected by the urine test.  All urine hCG tests should be done on a first morning urine sample, if possible.
Quora User, Recently pregnant. About the earliest you could possibly get a positive pregnancy test is 7 days past ovulation (you will conceive or not within 24 hours of ovulation). HOWEVER, if you get a negative test, that result does not mean you will not get a positive test if you wait a few more days. Less than 10% of pregnancies will be caught this early.