Normal levels. Normal levels of BUN are between 10 to 20 mg/dL for an adult and 5 to 18 mg/dL for a child. Normal creatinine levels are between.5 to 1.1 mg/dL for an adult female and.6 to 1.2 mg/dL for an adult male. Creatinine levels are lower in young children . BUN levels also change with gender and age and during pregnancy. Generally, blood urea nitrogen levels increase with increasing age. BUN levels in toddlers are around 66% of the levels found in an average healthy adult. Levels in adults over age 60 are greater than levels in young adults. BUN levels according to gender and age: Children: 5-18 mg/dL; Adult male: 8-20 mg/dL.
Apr 24, 2018 · BUN (Blood Urea Nitrogen) refers to a natural waste product present in the blood. BUN creatinine ratio normal range is commonly between 10:1 and 20:1, a low BUN to creation level is below 10:1 and high BUN: Cr ratio is the level above 20:1.Author: Catherine Nderi. Generally, the levels are first measured after fasting for at least 8 hours (usually overnight fasting). This is known as "fasting blood glucose". In adults, the readings that lie between 70 to 99 mg/dl (3.9 to 5.5 mmol/l) are considered as normal. In children, 100 mg/dl Author: Leena Palande.
Normal levels of blood urea nitrogen, or BUN, for adults and children range from 10 to 20 and 5 to 18 milligrams per deciliter, respectively, according to WebMD. For adult men and women, normal creatinine levels range between 0.7 to 1.3 and 0.6 to 1.1 milligrams per . A normal adult BUN is 10-20 mg/dl. A normal creatinine is 0.6-1.2 mg/dl. These values should be very close to having a 1:20 (createnine:BUN) ratio, this indicates normal kidney function.
To estimate normal ranges of blood urea nitrogen (BUN) and serum creatinine (Cr) levels in the aged, we measured BUN and Cr levels in 332 cases of apparent-healthy elderly subjects (male, 152; female, 180) aged 70 years or more. We measured the variables also in 315 cases of sex-matched young control subjects (male, 139; female, 176).Cited by: 6.