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.
1 Blood hCG testing is much more sensitive than a urine HPT. 2  This means that the blood test can detect pregnancy several days earlier than the urine test, as early as 2-3 days after implantation or 8-9 days after fertilization.