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Review title: Unreliable
Product review: Buyer beware, this product is unreliable and shouldn't be used for any medical purposes. I bought two of these because I needed to know what my blood type was for work, both cards I used gave me a blood type result of A Negative. When I was finally able to get my doctor's office to order the blood type test for me I was surprised to find out my blood type was actually A Positive.
