Which plasma protein is the most abundant in the human body?

Albumin is the most abundant plasma protein in the human body, constituting about 50-60% of the total protein content in plasma. It is produced by the liver and plays a crucial role in maintaining oncotic pressure, which helps to keep fluid within the blood vessels, and it serves as a carrier for various substances, including hormones, vitamins, and drugs. Additionally, albumin is important for transporting fatty acids and other substances that are not soluble in water.

The significant presence of albumin in plasma is vital for maintaining proper fluid balance and nutrient transport throughout the body. By stabilizing blood volumes and preventing edema, albumin is essential for cardiovascular health. This understanding of albumin's roles highlights why it is recognized as the most abundant plasma protein when discussing human physiology.