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How is the Widal test performed?

The patient’s serum is mixed with known Salmonella antigens on a slide or test tube. If antibodies are present, agglutination (clumping) occurs, indicating a positive reaction.


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Sheetal Chhaya Diagnostics provides diagnostic testing and healthcare-related information for general informational and service-related purposes. The information available on this website is not intended to replace professional medical advice, diagnosis, or treatment from a qualified healthcare professional.