https://medlineplus.gov/lab-tests/antibody-serology-tests/
Antibody serology tests look for antibodies in your blood. They check if your body can fight off certain diseases or look for signs of an autoimmune disease.
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https://www.ucsfhealth.org/medical-tests/campylobacter-serology-test
Campylobacter serology test is a blood test to look for antibodies to bacteria called campylobacter. How the Test is Performed A blood sample is needed.
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