Abdominocentesis reveals sanguineous fluid. How can you determine that it is fresh blood rather than just hemorrhagic fluid? 腹腔穿刺液为血样。你该怎样区分这些是新鲜血液还是血性液体？
A - See if it clots 看它是否凝结
B - Measure lactate 检测其乳酸值
C - Evaluate red blood cell morphology microscopically 显微镜检查红细胞形态
D - Take another sample, and check color 再次穿刺采样看其颜色