The patient must present with a full bladder. 1  2hrs prior to the appointment, the patient should empty their bladder. 2  Over the next hour they should drink at least 1 litre of water. This allows time for the water to reach the bladder. 3  Do not go to the toilet until instructed by the Sonographer.
It is important to get the Rhogam shot if you are a negative blood type and your significant other is a postive. Negatuve blood type is a recessive trait, therefore its highly likely your baby will have a postivie blood type. A negative blood type means your blood cells lack a protien coating.
A negative test for hepatitis B antigen only means that you are NOT a chronic carrier and DONT have acute hepatitis. It tells you nothing about your prior vaccination. If you want to know if you are immune (by vaccination or by prior infection), then you need to knwo what your hepatits B ANTIBODY status is.I'm sure your doctor did this test at the same time as the antigen test. If your hepatitis B antibody is also negative, youre not immune and need vaccination.If the antibody is positive, you are immune and dont need a vaccination.f you want to see if someone has been vaccinated you have to check hepatitis B SURFACE ANTIBODY, not the antigen. A positive antibody test means either you have had hepatitis B in the past and got over it. OR you have been vaccinated.