Hello. Yes it is possible. There are two types of blood test. Quantitative and Qualiative. The quantitative measures the amount of HCG in your blood. This test is highly accurate. The qualiative is the test that can give incorrect results. With this test it only gives you a Yes or No answer. For example it will give a yes on 50MIU of HCG but a negative on lower than this. And if you have 49MIU HCG in you it will still say negative even though this is positive. Anything over 5MIU is positive. I would have the quantitative beta hcg blood test. Good luck and please recommend me if I have helped you.
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