Plasma

Plasma is the liquid part of blood.
Serum is the liquid that separates from clotted blood (plasma without clotting factors).
Lymph is the fluid within lymphatic vessels (mostly plasma and white blood cells).
The blood contains important proteins: albumin, globulins, and fibrinogen.
Serum albumin makes up more than half of plasma proteins.
Albumin is a major contributor to the osmotic pressure of plasma.
Albumin is produced in the liver and transports fatty acids and some lipid-soluble hormones and drugs.
Globulins make up about 35% of plasma proteins, including immunoglobulins (antibodies) and transport proteins.
Fibrinogen is converted to insoluble fibrin strands by thrombin during blood clotting.

Soluble organic nutrients in the blood include glucose, fatty acids, amino acids, and wastes (such as urea).
Triglycerides and cholesterol are not soluble in plasma, so are carried with lipoproteins (lipid/protein complexes).
The major buffer in blood is bicarbonate, with a pH between 7.35 and 7.45.
The major ions in blood are sodium and chloride.