Generally, the larger the amount of water consumed, the clearer the urine appears. If the urine becomes white, it indicates that the water filtered by the kidney function has been diluted. If not, it may mean that there are other things happening. Therefore, if you have consumed a lot of water recently, the urine may be completely clear, and light yellow or translucent light yellow urine may also indicate that you are well hydrated.

1. Is it serious if urine is grayish-black?

Urine that is grayish-black should be described as brown or black.

Brown or black urine often indicates hematuria, in such cases, we need to go to the hospital for treatment and determine the cause. We can first do a urinalysis test to see if there are not too many urinary occult blood and blood cell counts. Brown or black urine generally indicates bleeding in the urinary and reproductive systems or rhabdomyolysis caused. If there are also certain clinical manifestations, such as muscle pain, a blood sodium concentration test should be performed. If blood sodium or creatine kinase levels are significantly elevated, it indicates rhabdomyolysis, and immediate treatment is required because if not treated promptly, it can easily lead to kidney function impairment.

Secondly, the relationship between the color of urine and physical health

1. Urine that is very dark brown and light yellow

Urine that is brown or pure honey-colored, or even deep orange, may indicate that your body is not getting enough water. If you are dehydrated and still absorbing a large amount of water, your urine will become darker. In addition to the deep color of the urine, other symptoms of dehydration include fatigue, chills, bad breath, a desire for sugar, or muscle cramps. First, try to increase your water intake (it is recommended to add 1.5 to 2.8 liters of water per day). If this does not work, then make an appointment with a doctor to rule out other problems. Some medications can also cause your urine to appear a deep brown or orange color, including phenazopyridine (usually used to treat urinary tract infection (UTI) pain) and sulfamethoxazole (used to treat ulcerative colitis).

2. Urine that is very dark brown

Is your urine like tea, a deep brown carbonated beverage, or Coca-Cola? Some ingredients, including goldthread, cowpeas, and bamboo shoots, may be the culprit. The urine that is very dark brown may also indicate more severe dehydration than urine that is dark brown or orange. If you have recently undergone urological surgery, the deep brown skin you see may be the result of blood gradually dissolving in the urine. Some antibiotics (such as nitrofurantoin and furazolidone), laxatives (like calcium carbonate or senna), and medications (such as acetaminophen and methyldopa) can also cause urine to appear dark brown. However, urine that is very dark brown may indicate a more serious problem. One possible problem is that your liver is not functioning properly.

3. Bright red or pale pink urine

Have you recently eaten a lot of blueberries or kohlrabi? These ingredients can change the color of urine. Medication treatment may also be the culprit, such as phenazopyridine or rifampicin.

4. Deep blue or emerald green urine

A dye present in some food or medications (antidepressants and antiviral drugs can sometimes be the culprit) can make your urine appear deep blue or emerald green. Generally speaking, this is usually due to medication treatment. Deep blue or green urine is a sign of familial hypercalcemia, also known as the deep blue urine syndrome, a rare genetic disease.