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The rare simultaneous occurrence of thrombocytopenia (low blood platelets) with blood clots after vaccination raised the original concern about this condition. [citation needed] In many cases where acute thrombosis and thrombocytopenia have been found together after COVID‑19 vaccination, an antibody against platelet factor 4 has been ...
The COVID-19 vaccines and testing positive. After surviving a full year of a highly contagious and deadly virus, the development of COVID-19 vaccines brings a glimmer of hope. The rollout has been ...
Vaccine-induced seropositivity (VISP) is the phenomenon wherein a person who has received a vaccine against a disease would thereafter give a positive or reactive test result for having that disease when tested for it, despite not actually having the disease.
After seroconversion, the antibody is detectable by standard techniques and remains detectable unless the individual seroreverts, in a phenomenon called seroreversion, or loss of antibody detectability, which can occur due to weakening of the immune system or decreasing antibody concentrations over time. Seroconversion refers the production of ...
If you test positive for COVID-19 on a rapid antigen test, you should trust that result. “If it actually is positive, that really does indicate that you are infectious and that your risk of ...
Anti-smooth muscle antibodies are antibodies (immunoglobulins) formed against smooth muscle. These antibodies are typically associated with autoimmune hepatitis. [1] [2] These antibodies can be directed against actin, troponin, and tropomyosin. [3]
The development of necrotizing myopathy after statin exposure is insufficient to make the diagnosis. Testing must first exclude other causes of myositis and necrotizing myopathy. [7] A muscle biopsy consistent with SAAM will demonstrate muscle cell death with muscle fiber regeneration and typically has few inflammatory cells.
The skin is from a patient with systemic lupus erythematosus and shows IgG deposit at two different places: The first is a band-like deposit along the epidermal basement membrane ("lupus band test" is positive). The second is within the nuclei of the epidermal cells (anti-nuclear antibodies).