Because the metabolic rate of men is higher than that of women, men produce more creatinine than women. Secondly, the normal range of urea nitrogen is about 2. 1-8.2mmol/L, and the normal range of female uric acid is140-340 μ mol/L.
The male's is about 200-420μ mol/L. In addition, if urine routine is checked, the normal values of urine white blood cells, urine occult blood, urine protein and urine sugar should all be negative.
Extended data:
Kidney is one of the indispensable organs of human body. It forms the urinary system with ureter, bladder and urethra. The kidneys are paired parenchymal organs, one on the left and the other on the right.
They are located on both sides of the spine, near the posterior abdominal wall. Because this part is located at the waist, people also call the kidney "waist". The kidneys look like smooth broad beans. Each kidney is10 ~12cm long, 5 ~ 6cm wide and 3 ~ 4cm thick, and weighs120 ~150g.
If you cut the kidney vertically, you can clearly see the internal structure of the kidney. It consists of renal parenchyma and renal pelvis. Renal parenchyma is divided into cortex and medulla. There are thousands of functional units that produce urine in renal parenchyma (also called nephron). There are 1 10,000 to 2 million nephrons in two kidneys of human body.
If the renal cortex is regarded as the "factory" that produces urine, then nephron is the "workshop" that produces urine. The renal medulla is mainly composed of many tubules called collecting ducts. Its task is to collect urine from nephron and then transport it to renal calices and renal pelvis. The renal pelvis communicates with the ureter.
Urine enters the bladder from the renal pelvis through the ureter for storage, and then is discharged from the urethra. Normal kidneys usually have only a small number of nephrons working, which shows that kidneys have a strong reserve function.
References:
Baidu encyclopedia-renal function