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Blood urea nitrogen ( BUN) is a medical test that measures the amount of urea nitrogen found in blood. The liver produces urea in the urea cycle as a waste product of the digestion of protein. Normal human adult blood should contain 7 to 18 mg/dL (0.388 to 1 mmol/L) of urea nitrogen. [ 1] Individual laboratories may have different reference ...
LOINC. 44734-2, 3097-3. In medicine, the urea-to-creatinine ratio ( UCR[ 1] ), known in the United States as BUN-to-creatinine ratio, is the ratio of the blood levels of urea ( BUN) (mmol/L) and creatinine (Cr) (μmol/L). BUN only reflects the nitrogen content of urea (MW 28) and urea measurement reflects the whole of the molecule (MW 60), urea ...
Azotemia. Azotemia (from azot 'nitrogen' and -emia 'blood condition') is a medical condition characterized by abnormally high levels of nitrogen -containing compounds (such as urea, creatinine, various body waste compounds, and other nitrogen-rich compounds) in the blood. It is largely related to insufficient or dysfunctional filtering of blood ...
Uremia is the term for high levels of urea in the blood. Urea is one of the primary components of urine. It can be defined as an excess in the blood of amino acid and protein metabolism end products, such as urea and creatinine, which would be normally excreted in the urine. Uremic syndrome can be defined as the terminal clinical manifestation ...
Basic metabolic panel. A basic metabolic panel ( BMP) is a blood test consisting of a set of seven or eight biochemical tests and is one of the most common lab tests ordered by health care providers. Outside the United States, blood tests made up of the majority of the same biochemical tests are called urea and electrolytes ( U&E or " U and Es ...
003468. LOINC. 24322-0, 24323-8. The comprehensive metabolic panel, or chemical screen ( CMP; CPT code 80053), is a panel of 14 blood tests that serves as an initial broad medical screening tool. The CMP provides a rough check of kidney function, liver function, diabetic and parathyroid status, and electrolyte and fluid balance, but this type ...
t. e. Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry ...
The blood urea nitrogen (BUN) test is a measure of the amount of nitrogen in the blood that comes from urea. It is used as a marker of renal function , though it is inferior to other markers such as creatinine because blood urea levels are influenced by other factors such as diet, dehydration, [ 32 ] and liver function.