Lysine Unit Converter

Lysine is an essential amino acid, meaning the body cannot produce it on its own. It must be obtained through diet or supplementation.

A plasma lysine test measures the concentration of lysine circulating in your blood. It is typically ordered as part of a broader amino acid profile to assess nutritional status, detect inherited metabolic disorders, or investigate symptoms such as fatigue and muscle weakness.

Lysine plays key roles in protein synthesis, collagen formation, calcium absorption, immune function, and the production of carnitine, which the body uses to convert fatty acids into energy.

Lysine is obtained entirely from the diet. Rich sources include red meat, poultry, fish, eggs, dairy products, soybeans, lentils, and other legumes.