Plasma, which constitutes 55% of blood fluid, is mostly water, 92% by volume, and contains dissipated proteins, glucose, mineral ions, hormones and carbon dioxide.

血浆占血液液体的 55%，主要是水（体积占 92% ），含有分散的蛋白质、葡萄糖、矿物离子、激素和二氧化碳。