What does it mean if BUN and creatinine are low?

What does it mean if BUN and creatinine are low?

A low BUN-to-creatinine ratio may be caused by a diet low in protein, a severe muscle injury called rhabdomyolysis, pregnancy, cirrhosis, or syndrome of inappropriate antidiuretic hormone secretion (SIADH).

Is a BUN level of 5 low?

The BUN is roughly one-half of the blood urea [3]. Normal human adult blood should contain between 5 to 20 mg of urea nitrogen per 100 ml (5 to 20 mg/dL) of blood, or 1.8 to 7.1 mmol urea per liter [3].

What is considered a low BUN level?

In general, around 6 to 24 mg/dL (2.1 to 8.5 mmol/L ) is considered normal. But normal ranges may vary, depending on the reference range used by the lab and your age. Ask your doctor to explain your results. Urea nitrogen levels tend to increase with age.

Is BUN a better indicator of kidneys diseases than creatinine?

Serum creatinine is a more accurate assessment of renal function than urea; however, urea is increased earlier in renal disease. The ratio of BUN: creatinine can be useful to differentiate pre-renal from renal causes when the BUN is increased.

What diseases cause low creatinine levels?

Low creatinine clearance levels can mean you have chronic kidney disease or serious kidney damage. Kidney damage can be from conditions such as a life-threatening infection, shock, cancer, low blood flow to the kidneys, or urinary tract blockage.

Is low creatinine serious?

What are the symptoms of low creatinine?

Symptoms of low creatinine

• Low muscle mass: Lack of strength, difficulty exercising, a thin or frail body.
• Liver disease: Inflamed liver, which may cause pain in the upper right-side of the abdomen, fatigue or nausea.
• Diet-related: Feeling faint or dizzy, losing weight.

Is 5 a high creatinine level?

What are considered high creatinine levels? A person with only one kidney may have a normal level of about 1.8 or 1.9. Creatinine levels that reach 2.0 or more in babies and 5.0 or more in adults may indicate severe kidney impairment.

What is the normal range for BUN creatinine ratio?

BUN/Creatinine Ratio Normal Range The normal range for BUN/Creatinine ratio is anywhere between 5 – 20 mg/dL. BUN/Creatinine ratio increases with age, and with decreasing muscle mass [ 6 ].

What does it mean when your creatinine ratio is low?

A decreased ratio may be observed with liver disease and poor diet. Temporary levels that are high or low may not be a cause for concern and should be retested to confirm. What does it mean if your BUN/Creatinine Ratio result is too high?

What causes low BUN/creatinine levels?

The causes shown here are commonly associated with low BUN/creatinine. Work with your doctor or other health care professional for an accurate diagnosis. Low protein intake, seen in conditions of malnutrition and starvation. Less protein means lower BUN production [ 3 ].

What happens to your bun levels when your kidneys are damaged?

It is normally removed from your blood by your kidneys, but when kidney function slows down, the BUN level rises. BUN can also rise if you eat more protein, and it can fall if you eat less protein. Urine Protein: When your kidneys are damaged, protein leaks into your urine. A simple test can be done to detect protein in your urine.