Creatinine is a substance produced by muscle metabolism, which is mainly excreted by the kidney through urine. The creatinine level in blood or urine can reflect the filtration function of kidney, which is one of the commonly used indexes to evaluate renal function. Creatinine is a small molecular substance, which can enter the original urine through glomerular filtration and is not reabsorbed by renal tubules. Almost all creatinine produced in the body is excreted with urine every day, which is generally not affected by urine volume.
With regard to the normal value of creatinine, at present, most medical institutions adopt the national health standard implemented in 20 15. The reference standard of serum creatinine is: male 54 ~106 umol/l; Female 44 ~ 97 umol/l; 24.9 ~ 69.7 umol/l for children. The reference standard of normal urinary creatinine is: male 5.3 ~1.6 mmol/d; Female 7 ~18 mmol/d.
When the creatinine level in serum or urine exceeds the normal range, it is called creatinine abnormality. Generally speaking, the higher the creatinine level in serum or urine, the worse the renal filtration function, and acute or chronic renal injury or disease may occur. There are many reasons for abnormal creatinine, which need to be diagnosed and treated in combination with other examination items and clinical manifestations. (The above data is self-knowledge. )
Methods of controlling creatinine level:
1. Diet control: The creatinine level in serum or urine is related to the intake of protein in the diet, because creatinine will be produced after protein is metabolized. Therefore, we should choose high-quality and low-protein foods, such as milk, eggs, lean meat, fish and so on. And avoid too much meat and dairy products.
2. Increase water intake: Water intake can increase urine volume and promote creatinine excretion, thus reducing creatinine level in serum or urine. It is generally recommended to drink about 1500-2000 ml of water every day, and adjust it according to personal situation and climate change. But if there is edema, cardiac insufficiency, etc. Water intake should be limited to avoid increasing the burden on the kidneys.
3, proper exercise: exercise can promote metabolism, enhance physical fitness, improve blood circulation, is conducive to kidney function. However, exercise can also increase muscle metabolism and produce more creatinine. Therefore, it is necessary to choose appropriate exercise methods and intensity, such as walking, jogging, Tai Ji Chuan, etc., to avoid strenuous or excessive exercise.