Urea nitrogen

Urea Nitrogen, Blood
Medical Dictionary
Definition of medical terminology for Urea Nitrogen, Blood.

Urea nitrogen
The blood urea nitrogen (BUN) test is a measure of the amount of nitrogen in the blood in the form of urea, and a measurement of renal function.

Urine urea nitrogen
Definition of Urea nitrogen - urine:
Urine urea nitrogen is a measure of protein breakdown in the body. A test can be done to measure the amount of urea in the urine.

Blood urea nitrogen to creatinine ratio (BUN:creatinine)
A BUN test may be done with a blood creatinine test.

Blood Urea Nitrogen - BUN
Overview & Description
Preparation & Expectations
Results and Values
Attribution ...

Urea nitrogen is produced when proteins are metabolized or broken down. Elevated levels of blood urea nitrogen (BUN) can be a sign of kidney disease, liver disease or dehydration.
Who is a candidate for the test?

Blood Urea Nitrogen and Urea Nitrogen
Argininosuccinic aciduria
Citrullinemia
Arginase Deficiency
Carbamoyl phosphate synthetase I deficiency ...

The blood urea nitrogen (BUN) test is a test of how well your kidneys are working. It measures the amount of nitrogen in your blood. The nitrogen is present in a chemical called urea. Urea is a waste product produced as your body digests protein.

BUN stands for blood urea nitrogen. Urea nitrogen is what forms when protein breaks down.
A test can be done to measure the amount of urea nitrogen in the blood.
Why is the Test Performed?

urea nitrogen A chemical in the blood produced by the breakdown of protein. Urea nitrogen is removed from the blood by the kidneys. Blood urea nitrogen (BUN) tests are sometimes done to see how well the kidneys are working.

Blood urea nitrogen (BUN) is a measure of how well the kidneys are working. Urea is a nitrogen-containing waste product that's created when the body breaks down protein.

Blood Urea Nitrogen Test
Definition Blood urea nitrogen (BUN) is a chemical waste product of protein metabolism. Proteins are broken down into amino acids within the liver; these amino acids are metabolized, giving rise to nitrogen.

Blood urea nitrogen (BUN): A waste product in the blood from the breakdown of protein. The kidneys filter blood to remove urea. As kidney function decreases, the BUN levels increase.

Blood urea nitrogen (BUN)-A waste product that is formed in the liver and collects in the bloodstream; patients with kidney failure have high BUN levels.
Creatinine-A protein produced by muscle that healthy kidneys filter out.

Blood Urea Nitrogen (BUN)
Blood carries protein to cells throughout the body. After the cells use the protein, the remaining waste product is returned to the blood as urea, a compound that contains nitrogen.

Blood Urea Nitrogen (BUN)
A blood test that helps measure kidney function.
Bone Marrow
Soft tissue in bone cavities; produces blood cells.

Blood urea nitrogen (BUN): A measure primarily of the urea (a byproduct of muscle metabolism) level in blood. Urea is cleared by the kidney. Diseases that compromise the function of the kidney frequently lead to increased blood levels.

Blood urea nitrogen test, BUN test, CAPD, CCPD, continuous ambulatory peritoneal dialysis, continuous cycling peritoneal dialysis, cyclosporine toxicity, dialysis, diuretic, diuresis, Fanconi-syndrome, hemodialysis, gentamicin toxicity, ...

Blood Urea nitrogen and Creatinine may be elevated if there is significant urinary retention
Urinalysis to make sure no infection is present
Prostate specific antigen to exclude Prostate Cancer
Urinary tests: ...

Blood Urea Nitrogen/creatine Ratio
JNC-V
Fifth Report Of The Joint National Committee On Detection, Evaluation And Treatment Of High Blood Pressure ...

Blood urea nitrogen
References
Molitoris BA. Acute kidney injury. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 121.

Blood Urea Nitrogen (BUN)Normal 5-20
Urea is the by-product of metabolism. BUN is a screening test to determine how well the kidneys are functioning.

BUN (Blood urea nitrogen): a test that measures the amount of a certain waste product (nitrogen) excreted by the kidneys.
BUPLEURUM: an herb traditionally used in Chinese medicine to treat liver conditions.
BX: see Biopsy.

D. Blood urea nitrogen, creatinine, and glucose are simple blood tests that help rule out underlying renal disease and diabetes.

A BUN (Blood Urea Nitrogen) test is used to determine how well your kidneys are working by measuring the amount of urea nitrogen in the blood.

urea nitrogen (yoo-REE-uh NY-truh-jen) Nitrogen in the blood that comes from urea (a substance formed by the breakdown of protein in the liver). The kidneys filter urea out of the blood and into the urine.

Urea Nitrogen, Blood - Medical Test
Urease inhibitors for kidney stones - Medication
Urecholine - Medication
Ureteroscopy
Urethra Prolapse Repair
Urethral bulking for urinary incontinence ...

Tests: Laboratory tests that may be performed include measurement of electrolytes (sodium, potassium, chloride), serum bilirubin, blood urea nitrogen (BUN), albumin and total protein levels, blood glucose, kidney function tests, ...

Blood pH Blood poisoning Blood pressure Blood Pressure Blood pressure cuff Blood pressure, high Blood pressure, low Blood sugar Blood sugar, high Blood sugar, low Blood Thinners (anticoagulants) Blood transfusion Blood Typing Blood urea nitrogen ...

A patient with any sort of impaired kidney function will have increased creatinine and urea nitrogen in the blood, or azotemia.

As your kidneys fail, your blood urea nitrogen (BUN) levels will rise as well as the level of creatinine in your blood.

These can provide information about kidney damage and impairment of the filtering mechanisms by measuring levels of waste products, such as creatinine and blood urea nitrogen.
Imaging tests.

Blood urea nitrogen (BUN). A nitrogen-containing substance called urea is a normal byproduct resulting when the body breaks down and uses protein. Healthy kidneys remove urea from the blood for excretion in urine.

Your doctor or healthcare provider may order certain blood tests, including a blood urea nitrogen (BUN) and Creatinine test, to monitor your kidney function if signs of kidney problems are present.

Blood Urea Nitrogen.
Calcium (Ca) in Blood.
Carbon Dioxide (Bicarbonate).
Chloride (Cl).
Cholesterol and Triglycerides Tests.
Creatinine and Creatinine Clearance.
Gamma-Glutamyl Transferase (GGT) Opens New Window.

Urinalysis
Serum glucose (sugar) test
Blood urea nitrogen test
Creatinine studies
Fluid deprivation test (the intake of fluids is restricted to see if the urine volume decreases)
Serum osmolality and urine osmolality tests
Serum electrolytes ...

The kidneys are unable to filter out metabolic waste products (creatinine and blood urea nitrogen) and to concentrate urine, and this is accompanied to a variable degree by a failure of the regulation of the composition of body fluids, ...

Blood transfusion
Blood urea nitrogen (BUN) test
Blood urea nitrogen test (See: Blood urea nitrogen (BUN) test)
Body contouring (See: Liposuction)
Bone density test ...

Blood tests for kidney function measure levels of blood urea nitrogen (BUN) and creatinine (kre-AT-ih-neen). Both of these are waste products that the kidneys filter out of the body.

Blood tests - Blood tests are used to measure the level of creatinine and blood urea nitrogen (BUN), which become elevated when the kidneys are damaged and are not filtering properly.

elevated blood urea nitrogen and serum creatinine levels and proteinuria, indicating glomerular involvement
normal coagulation and platelet function (with the exception of a positive tourniquet test).

The proportion of certain waste chemicals (such as creatinine or urea nitrogen) in the urine may show the extent of the damage to the kidneys. A kidney biopsy may be needed, especially in cases that don't respond to treatment.

CHEM 7: A blood test that measures the basic electrolytes in blood: sodium, chloride, potassium, carbon dioxide, blood urea nitrogen (BUN), creatinine, and glucose.

Kidney disease is diagnosed by analyzing urine and measuring certain blood chemicals, such as creatinine and urea nitrogen. Additional tests may be necessary to determine the exact reason that the kidneys have stopped working.
Expected Duration ...

This panel measures the blood levels of sodium, potassium, calcium, chloride, carbon dioxide, glucose, blood urea nitrogen, creatinine, protein, albumin, bilirubin, and liver enzymes. For more information, see the medical tests: ...

Other metabolic substances can be measured to evaluate organ function:
Metabolic Product Organ Affected
BUN (blood urea nitrogen)
Kidney function ...

Additionally, there is decreased blood urea nitrogen (BUN) and creatinine, and glucosuria (due to saturated tubular reabsorption), persistent glucosuria may suggest gestational diabetes, and increased renin-angiotensin system, ...

Blood tests: elevated liver tests, low albumin, high AFP, low sodium, high blood urea nitrogen
Staging of tumor: tumor over 3 cm, multiple tumors, tumor invasion of local blood vessels, tumor spread outside of liver.

Urea: A nitrogen-containing substance normally cleared from the blood by the kidney into the urine. Diseases that compromise the function of the kidney often lead to increased blood levels of urea, as measured by the blood urea nitrogen (BUN) ...

Blood urea nitrogen (BUN) levels-blood test to measure kidney function
Abdominal ultrasound -a test that uses sound waves to examine internal organs and blood vessels for abnormalities
Nerve conduction velocity-evaluates the condition of the nerves ...

Estimated nitrogen losses consist of urinary nitrogen losses (estimated by measuring urea nitrogen content of an accurately obtained 24-h urine collection) plus stool losses (estimated at 1 g/day if stool is produced; ...

They filter waste products of body metabolism, like urea from protein metabolism and uric acid from DNA breakdown. Two waste products in the blood can be measured: blood urea nitrogen (BUN) and creatinine (Cr).

See also: Kidney, Symptom, Diabetes, Death, High blood pressure