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Albumin is a vital plasma protein predominantly produced by the liver. It plays a key role in maintaining the osmotic pressure within the blood vessels. Osmotic pressure is essential because it helps regulate the movement of water between the tissues and the bloodstream. This regulation keeps tissues from swelling excessively and ensures that blood flows smoothly throughout the circulatory system.
Additionally, albumin acts as a carrier protein, transporting various substances in the blood. These include hormones, vitamins, and drugs, ensuring they reach their target destinations in the body. Without albumin, our body would struggle to maintain proper fluid balance, leading to complications like edema (swelling).

• Maintains osmotic pressure
• Transports substances like hormones and drugs

Globulins are a diverse group of plasma proteins with several important functions. One of their primary roles is in the immune system. Certain globulins, known as immunoglobulins or antibodies, are crucial in detecting and neutralizing pathogens like bacteria and viruses. They play a central role in our body's defense mechanism.
Besides their immune function, globulins are also involved in transporting lipids, hormones, and minerals through the bloodstream. This ensures that these substances are efficiently distributed throughout the body. The diversity of globulins underlines their importance in maintaining multiple body functions.

• Participate in immune defense (immunoglobulins)
• Transport lipids, hormones, and minerals

Fibrinogen is a key plasma protein essential for blood clotting. Produced by the liver, fibrinogen circulates in the blood in a soluble form until injury occurs. During the blood coagulation process, fibrinogen is transformed into fibrin by the action of an enzyme called thrombin.
Fibrin is insoluble and forms a meshwork that helps trap blood cells, creating a stable blood clot that prevents further blood loss from the body. This process is vital for healing wounds and preventing excessive bleeding. Without fibrinogen, even minor injuries could lead to severe blood loss.

• Facilitates blood clotting
• Transforms into fibrin during coagulation