https://www.selleckchem.com/products/ag-221-enasidenib.html High-titer antibodies are a cause of false-negative reactions in red blood cell antigen phenotyping, an event referred to as blocked antigen phenomenon (BAP). In hemolytic disease of the fetus and newborn, BAP complicates laboratory workups as fetal phenotype is helpful in confirming the responsible antibody. Acid elution techniques, techniques using ethylenediaminetetraacetic glycine acid, as well as those using chloroquine diphosphate have been used to resolve BAP; however, ethylenediaminetetraacetic glycine acid destroys K-antigen expression and chloroquine diphosphate is not always effective. We report a case of severe hemolytic disease of the fetus and newborn from anti-K where a modified gentle heat elution resolved BAP. Although infrequently considered with isolated reports in the literature, heat elution is simple, is effective, and involves readily available materials in most blood banks. BACKGROUND The Field Assessment Stroke Triage for Emergency Destination (FAST-ED) score was developed in the hospital setting to be used in the prehospital setting. It has been shown to have higher predictive value than comparable stroke scales, including the National Institutes of Health Stroke Scale, for identifying large vessel occlusion strokes. OBJECTIVE We sought to determine whether prehospital FAST-ED scores are comparable with FAST-ED scores determined by emergency physicians. METHODS Emergency Medical Services (EMS) personnel were trained to calculate a FAST-ED score for any patient suspected of having a stroke in the field. When the patient arrived at our ED, an emergency physician generated a FAST-ED score. RESULTS One hundred and thirty-five patients were studied and large vessel occlusions were detected in 23.7%. There was no significant difference between median FAST-ED scores from EMS personnel (3; interquartile range [IQR] 1-5) and emergency physician (2; IQR 1-6). The difference between paired sc