What is the normal value of urine creatinine?

Urinary creatinine is a harmful substance produced by muscle metabolism. This substance is widely present in muscles. If the accumulation amount exceeds the standard value, it may cause serious damage to health. Therefore, people who love sports should pay attention to their own urine creatinine secretion levels and monitor them at any time. Let’s take a look at what is the normal value of urine creatinine? What are the impacts?

Creatinine is a toxin produced by muscle metabolism and is mainly cleared by the kidneys. Its levels also increase after a person exercises a lot or eats a lot of meat. If creatinine is slightly higher than normal in this case, don't worry too much, as the indicator will return to normal after adjusting your diet.

Normal values ​​for urine creatinine are:

Adult males: 7.1 to 17.7 mmol/24 hours urine.

Adult females: 5.3-15.9 mmol/24-hour urine;

Children: 71-195 μmol/24-hour urine;

Infants, 88-177 μmol/24-hour urine.

Effect of urine creatinine:

1. Increased urine creatinine: seen in acromegaly, gigantism, diabetes, infection, hypothyroidism, eating meat, exercise, and taking medications (such as vitamin C, levodopa, methyldopa, etc.).

2. Decreased urine creatinine: seen in acute or chronic renal insufficiency, severe congestive heart failure, hyperthyroidism, anemia, muscular dystrophy, leukemia, vegetarians, and those taking androgens, thiazide drugs, etc.

3. Increased blood creatinine: seen in acute or chronic renal insufficiency, acromegaly, gigantism, diabetes, infection, eating meat, exercise, and taking medications (such as vitamin C, levodopa, methyldopa, etc.).

A serum creatinine level higher than normal usually means kidney damage. Serum creatinine can more accurately reflect the extent of renal parenchymal damage, but it is not a sensitive indicator. Because when the kidney's filtration function drops to less than 1/3 of a normal person's, blood creatinine begins to rise. When it drops below 1/2, blood creatinine increases significantly.

4. Decreased blood creatinine: seen in severe congestive heart failure, anemia, muscular dystrophy, leukemia, vegetarians, and those taking androgens, thiazide drugs, etc.