Yellow urine means that the urine is yellow or dark yellow. The reason is:
In the process of eating carrots and taking riboflavin, furazolidone, mieshuiling, rhubarb and other Chinese and western medicines, the urine may turn yellow. Once the drug is stopped, it will disappear immediately, so don't worry.
Ordinary patients with fever or vomiting and diarrhea will concentrate and reduce urine because water is discharged with sweat or feces, but the urine pigment has not changed, so the color of urine appears very yellow.
Another kind of yellow urine, like strong tea, is not because of the above reasons, but because of liver or pouch lesions. It turns out that bile is usually discharged in two ways: one is from urine and the other is from intestine.
When the liver or gallbladder is sick, bile is cut off from the intestine, so it can only be discharged from the urine, which is dark yellow due to the increase of bile content. In the early stage of hepatitis, before jaundice appeared, we can often see urine like strong tea, which is often a signal of hepatitis.
In addition, yellow turbid pyuria is the manifestation of pyuria in urinary organs.
Normal discharge of fresh urine is pale yellow, which is because urine contains a yellow urine pigment.
However, the color of urine will also darken or brighten the urine with the increase of drinking water. Drink more water, urinate more, the proportion of urine pigment in urine is small and the color is light; Drink less water, the proportion of urine pigment in urine is large, and the color appears yellow.
If the urine is left for a period of time, the color of the urine will become darker because some urine pigments in the urine are oxidized into urine pigments. The waste produced by human body and the urine pigment discharged every day are generally relatively constant, so the color of urine will not change greatly.
The urine color is light yellow, transparent, and there is no precipitation and turbidity. The newly dissolved urine has a special smell of grass, but it will decompose after being left for a long time, resulting in an ammonia smell.
96%-99% of urine is water, and most of the rest is waste, such as uric acid and creatinine. The daily urine output of normal people is 1000-2000ml, including 1500-2000ml for men and 1000- 1500ml for women.