RN or Nurse Practitioner? If youâre considering a nursing career, you may be wondering what the difference is between a registered nurse (RN) and a nurse practitioner (NP). What is the Difference Between an RN and an LVN?
  Answer     A blood test should be able to pick up the HCG in your blood at about 7 days after conception.     Some pregnancy tests say they can pick up â¦ HCG in your urine from about 7-10 days after conception, but most tests you have to wait to about 14 days-when your period is due.
Early pregnancy tests can never diagnose the presence of the hCG hormone until after implantation has taken place, and the earliest these tests can be used to detect pregnancy in the blood is about 8-9 days after fertilization/ovulation, and 2-3 days later in the woman's urine.