血红蛋白计数高表明红细胞中含铁蛋白质的水平高于正常。血红蛋白（往往缩写为 Hb 或 Hgb）是红细胞的携氧成分。
血红蛋白赋予红细胞颜色，帮助将氧从肺部输送到身体其余部分，以及将二氧化碳输回肺部呼出。
血红蛋白计数高的阈值略微因医疗实践而异。该阈值一般对男性定义超过 17.5 g 血红蛋白/分升 (dL) 血液，对女性定义为超过 15.5 g/dL。在儿童中，血红蛋白计数高的定义随年龄和性别而变动。血红蛋白计数也可能因一天的不同时间、身体补水状况和海拔而变动。
Dec. 02, 2020
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