The normal value of creatinine in urine is found 500 to 2000 mg/day and may vary with age. Creatinine is filtered by the kidneys and excreted in urine. Urine creatinine: This test measures the amount of creatinine in urine. If the GFR is high then it may indicate chances of kidney failure. The normal value in males is 97 to 137 mL/min and females is 88 to 128mL/min. It is also done to estimate the glomerular filtration rate (GFR). Creatinine is the waste product released when the muscle is put to work. Creatinine levels may be decreased slightly in pregnancy.Ĭreatinine clearance: This test determines the kidney functioning and suggests kidney dysfunction or decreased blood flow to kidneys as in congestive heart failure. If the level of creatinine is more than the normal value it indicates kidney conditions such as glomerulonephritis, pyelonephritis, acute tubular necrosis, kidney stones, prostate disease, and complications of diabetes. Normal value of creatinine is 0.8 – 1.4mg/dL Females have low creatinine than males because of the muscle mass. Creatinine is filtered from blood and excreted in urine by the kidneys. Creatinine is a byproduct of creatine produced when muscles are put to use. Decreased concentration of BUN is not common and may occur in cases of malnutrition and severe kidney disease.īlood Creatinine: This test measures the amount of creatinine in blood which signifies the filtering capability of kidneys. Elevated levels suggest impaired kidney function such as acute or chronic kidney disease, decreased blood flow to kidneys as in congestive heart failure and shock. The normal values of nitrogen in blood urea ranges from 7 to 20mg/dL. Urea is a waste product released from degradation of protein, which is filtered in the blood and excreted in urine by kidneys. Some of the commonly conducted laboratory tests areīlood urea nitrogen (BUN): The BUN test measures the nitrogen content in blood urea. These tests reveal the functioning and abnormalities, if any. Kidney function tests are the tests performed to evaluate kidney functioning. Kidney :: Prostate :: Urinary Bladder :: Testes When the BUN is out of range, healthcare providers will often refer to the creatinine clearance test or BUN/creatinine ratio for a more accurate assessment.Home » Patient Info » Genito Urinary System » Kidney » Kidney Function tests Small and large changes in BUN can occur from medications, dietary changes, and hydration status. Limitations of the test: The BUN test is a fast way to evaluate kidney function, but there are some limitations.When ordered as part of a basic or comprehensive metabolic panel, it can be used to evaluate a person's general health. BUN is usually used in conjunction with a creatinine test: The BUN test is primarily used along with the creatinine test to evaluate kidney function, as well as to monitor people with acute or chronic kidney dysfunction or failure.Before special tests: BUN tests may be ordered prior to some imaging studies like computed tomography (CT) scans and magnetic resonance imaging (MRIs) where contrast dyes that could damage the kidneys are used.Therefore, BUN is collected to monitor for kidney health and effectiveness of treatment in those who already have established kidney disease.

Typically, the ratio is between 10:1 and 20:1, with a slightly higher ratio in older adults.

Underlying health conditions: Diabetes and high blood pressure are two types of conditions that may affect the kidneys. The ratio of BUN/creatinine is an indicator of kidney health.Low levels of BUN may occur in people who have liver failure, women who are pregnant, and to those who are overly hydrated. Significant liver damage or disease may inhibit the production of urea which can cause BUN concentrations to fall. High levels can be seen in people who have gastrointestinal bleeding, high protein diets, infection, and dehydration. Low creatinine levels from a urine or blood test give providers clues about muscle and kidney health. The liver may produce too much urea or the kidneys may not be able to filter the waste out of the blood, which can cause levels to be high. High or low levels can indicate a problem: Diseases that affect the kidneys or liver can change the amount of urea in the blood.This process produces ammonia, which is then converted into the less toxic waste product urea. Urea is a waste product formed in the liver when protein is metabolized. What the test measures: This test measures the amount of urea nitrogen in the blood.

Low bun creatinine normal range