Doctors should be aware most serology tests haven't been reviewed by FDA. Quality is highly variable, with some or perhaps many giving uncertain results. False positive rates may be inappropriately high. Patients and doctors shouldn't rely on unproven tests for clinical decisions

Depending on specificity of serology test being used, false positive rates can range from 25-50%; meaning tests that return positive result saying you have antibodies to covid may be wrong as much as half the time. Many tests have 95% specificity which leaves false positives high