What does bun mean on lab report?

BUN stands for Blood Urea Nitrogen. It is a measure of the amount of urea nitrogen in the blood. Urea is a waste product that is produced when protein is broken down in the body. The kidneys filter urea from the blood and excrete it in the urine.

BUN levels can be elevated in a variety of conditions, including:

* Kidney disease: BUN levels are typically elevated in people with kidney disease because the kidneys are unable to effectively filter urea from the blood.

* Dehydration: Dehydration can cause BUN levels to rise because the body conserves water and reduces urine output, which leads to a build-up of urea in the blood.

* High-protein diet: Eating a high-protein diet can also cause BUN levels to rise because the body produces more urea when it breaks down protein.

* Certain medications: Some medications, such as diuretics and corticosteroids, can cause BUN levels to rise.

BUN levels are typically interpreted in conjunction with other laboratory tests, such as creatinine levels, to assess kidney function.