![]() The test is frequently requested along with the serum creatinine test since simultaneous determination of these 2 compounds appears to aid in the differential diagnosis of prerenal, renal and postrenal hyperuremia. The determination of serum BUN currently is the most widely used screening test for the evaluation of kidney function. In healthy individuals, normal BUN levels range between 5 to 20 mg/dL or 1.8 to 7. Urea nitrogen only reflects the nitrogen component of urea and not the whole urea molecule. Increased blood urea nitrogen (BUN) may be due to prerenal causes (cardiac decompensation, water depletion due to decreased intake and excessive loss, increased protein catabolism, and high protein diet), renal causes (acute glomerulonephritis, chronic nephritis, polycystic kidney disease, nephrosclerosis, and tubular necrosis), and postrenal causes (eg, all types of obstruction of the urinary tract, such as stones, enlarged prostate gland, tumors). What is a blood urea nitrogen (BUN) test The blood urea nitrogen (BUN) test measures the amount of urea nitrogen in the blood. This is the most important catabolic pathway for eliminating excess nitrogen in the human body. The ammonia formed in this process is synthesized to urea in the liver. A value that isnt in the normal range may still be normal for you. Your doctor will also look at your results based on your age, health, and other factors. Your lab report should show the range that your lab uses for each test. Normal BUN values do not necessarily exclude renal pathology or test article related renal effects. Each lab has a different range for whats normal. In protein catabolism, the proteins are broken down to amino acids and deaminated. By the time 75 of nephrons are non-functional, renal concentrating ability is usually impaired and urine is isothenuric with a specific gravity similar to glomerular fluid within the approximate range of 1.008 to 1.012. Urea is the final degradation product of protein and amino acid metabolism. fall within the normal range of the central laboratorys reference ranges unless the results have been determined by the investigator to not be clinically. Health Encyclopedia: Blood Urea Nitrogen. In adults, normal values are considered between 10 and 20 mg/dL, or between 3.6 and 7.1 mmol/L. In situations characterized by decreased glomerular perfusion pressure such as heart failure, BUN can increase independently from serum creatinine. Rochester (NY): University of Rochester Medical Center c2022. Study with Quizlet and memorize flashcards containing terms like BUN, Creatine, HCO3 and more. Normally, the BUN:serum creatinine ratio is about 15:1, with the BUN and serum creatinine increasing in the absence of GFR by 10 to 15 and 1.0 to 1.5 mg/dl/day, respectively. University of Rochester Medical Center.New York: National Kidney Foundation Inc., c2022. Department of Health and Human Services National Kidney Disease Education Program: Your Kidney Test Results. National Institute of Diabetes and Digestive and Kidney Diseases. Study with Quizlet and memorize flashcards containing terms like BUN, LDL, HDL and more.Department of Health and Human Services Kidney Disease. National Institute of Diabetes and Digestive and Kidney Diseases. ![]() ![]() Department of Health and Human Services Blood Tests. 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 6 to 20 mg/dL (2.1 to 7.1 mmol/L) of urea nitrogen. National Heart, Lung, and Blood Institute. ![]() Mayo Foundation for Medical Education and Research c1998-2022. There is very little risk involved with having your blood taken. Afterward there may be some throbbing or slight bruising. Some people feel only a prick or stinging. Mayo Foundation for Medical Education and Research c1998-2022. BUN (blood urea nitrogen): 6 to 20 mg/dL, When the needle is inserted to draw blood, you may feel moderate pain. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |