Urine is black

Introduction Black urine is one of the main symptoms of black urine fever. The urine of the patient is black, so it is called black urine heat. Black urine heat is an acute blood vessel hemolysis, and causes hemoglobin and hemolytic jaundice. Incomplete function. If the condition is mild, it will heal in a day or two. The cause is unknown, but black urine fever may be caused by quinine for the treatment of malaria, because people who take quinine often suffer from this disease. If the kidney function declines, the patient may have to wash the kidney with a dialysis machine. You must take an absolute rest and take care to recover. The patient should be given a large amount of alkaline fluid, or an intravenous drip of glucose solution, and sometimes instilled baking soda. Blood transfusion may be needed. Can not take quinine.

Cause

It may be an autoimmune reaction and may also be related to the lack of G-6-P dehydrogenase. The clinical features are sudden rise, chills and high fever, low back pain, soy sauce color urine, urination tingling, and severe anemia, jaundice, protein, and tubular urine. The geographical distribution of the disease is consistent with falciparum malaria, and it is rare in other regions except the southwest and coastal areas.

an examination

Related inspection

Urinary red blood cells (RBC, BLO) urine protein quantitative urine routine

There is a large amount of free oxygen, hemoglobin and oxyhemoglobin in the plasma, which causes dark red or black urine.

1 Add an appropriate amount of alkaline reagent to the urine to accelerate the appearance of urinary blackening.

2 After the alkali is basified, the Ban's reagent is brown, and the general reducing substance is orange-yellow.

3 adding chlorinated high-iron reagent can make the urine purple-black.

4 Take 0.5ml of urine and add 5ml of saturated silver nitrate aqueous solution to immediately show black, but vitamin C can cause false positive results.

Differential diagnosis

Dark urine: Black urine, also known as dark brown urine, is more common in melanoma patients. Melanoma produces too much melanin. Small melanin is reduced to melanin in the liver. If a large amount of melanin is excreted from the urine and becomes melanin after oxidation, the urine of the melanoma patient becomes black urine as long as it is left for a while.

Urine red sauce or soy sauce color: diagnosis of malaria nephropathy, urine test can be seen in urine red sauce or soy sauce color, some patients with long-term unhealed, can appear nephrotic syndrome. There is a large amount of free oxygen, hemoglobin and oxyhemoglobin in the plasma, which causes dark red or black urine.

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