Sometimes when the urine tests seem inaccurate or gives you different results, it's time to get a pregnancy blood test. Here is some info about blood pregnancy tests according to the American Pregnancy Association: "There are two types of blood tests. A quantitative blood test measures the exact amount of hCG in the blood, and a qualitative hCG blood test gives a simple yes or no answer to whether you are pregnant or not. Advantages of having a blood test done: Can detect a pregnancy earlier than a urine test at about 7-12 days from possible conception (but if a negative result is received, a test should be repeated if a period is missed.) Can measure the concentration of hCG hormone in your blood (this is useful information for your healthcare provider in tracking certain problems in pregnancy) Disadvantages to having a blood test done: More expensive than a urine test (price depends on cost of doctor’s visit and lab fees) Takes longer to get result Must be done in a doctor’s office" This is another option for urine home test kits available in your drugstore. Those kits are accurate too, but there times that you just want to be a hundred percent sure.