
Plasma volume
Plasma volume refers to the amount of liquid part of your blood that circulates throughout your body. It makes up about 55% of your total blood, carrying nutrients, hormones, and waste products to and from cells. Your body regulates plasma volume to maintain proper blood pressure, hydration, and overall balance. Changes in plasma volume can occur due to dehydration, bleeding, or certain medical conditions, affecting how well your circulatory system works. Essentially, plasma volume is a key factor in ensuring your blood efficiently delivers essential substances and maintains stable internal conditions.