Blood antibody levels could clarify long COVID prognosis and memory problems

Article excerpt

Blood antibody levels may help predict which COVID-19 survivors will develop long-term symptoms like fatigue, brain fog, and breathing difficulties, according to emerging research. Millions continue suffering persistent effects years after infection, even as acute cases have dropped. Scientists are investigating whether abnormal antibody patterns in the blood could serve as biological markers, measurable signals that distinguish long COVID patients from those who recover fully. If validated, such tests might eventually allow doctors to identify at-risk patients early and tailor treatment strategies, offering a concrete tool in an illness that has largely resisted both diagnosis and cure.