antibodiesantigenbloodcarecellchallengescovcoviddetectiondiabetesdiagnosingdiagnosticdiseasedonationdonordrensureenvironmenthealthhearthighkeylablaboratorieslaboratorylearningsmedicinemetricspartialpatientplasmarhrolesafetysarssepsissicklestrategiessystemtestingthyroidtransfusiontreatmenttypevaluewomen