This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'A pregnant woman who underwent syphilis testing showed positive results for VDRL but negative for specific treponemal tests. Interpret the results \nSelect and explain. \nA. Positive for syphilis, B. Biological false positive, C. False negative, D. Positive for non pathogenic Treponema', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pregnancy can give rise to false-positive VDRL. BFP (biological false positive reactions) is defined as positive reactions obtained in non-specific treponemal tests (RPR, VDRL)with negative results in specific treponemal tests, in the absence of past or present treponemal infections and not caused by technical faults. Chronic Biological False Positive reactions are seen in SLE Leprosy Malaria Relapsing feve r Infectious mononucleosis Hepatitis Tropical eosinophilia Reference: Ananthanarayan and Paniker&;s Textbook of Microbiology Tenth edition', 'role': 'assistant'}]