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What does positive Duffy antigen mean?
Query: Hi doctor, Are Duffy positive antigen Fy(a-b+) phenotype and Fy(a-b+) weak phenotype same? Is Fy(a-b+) caused by pregnancy? Do gynecologists or general physicians believe that Fy(a-b+) is caused by pregnancy? Does the obstetric history of G0Po mean the woman is both nulliparous and nulligravida, ind... Read Full »
Answer: Hello, Welcome to icliniq.com. The Duffy antigen is expressed on the red blood cells of the person in response to inflammation. There are different phenotypes, 1) a+b+. 2) a+b-. 3) a-b+. 4) a-b-. The first three phenotypes are present in the Caucasian and Asian populations, and the fourth is ... Read Full »