邪在血分証(syndrome/pattern of pathogenic factors in the blood phase),中醫証候名,屬外邪侵入証類,因溫熱病邪深入血分,耗血傷陰,或動風、動血所致。臨床以低熱、煩熱,或身熱夜甚,譫妄、躁擾,手足搐搦,斑疹紫黑,吐血、衄血,舌質深絳等為特徵的証候。[1]