Urine turbidity is easily observed by human eyes, so many patients go to the hospital. So, is urine turbidity related to urinary tract infections?
The main component of normal urine is water, accounting for 96%-97%, solid components accounted for 3%- 4%. Normal adult daily discharge of solid material is about 60 grams, the solid inorganic salt is about 25 grams, half of which is sodium and chloride ions; organic urea which is about 35 grams, about 30 grams, the other is carbohydrate, protein and metabolites in different amounts. Normal fresh urine is transparent, urine will soon become cloudy after discharge, mainly due to salt crystallization or bacterial growth and reproduction. When the time is longer or the temperature is higher, the urine turbidity is more obvious.
When fresh urine is cloudy, it can be seen in the following situations:
Urate precipitation: concentrated acidic urine that is cooled and precipitated with pale red uric acid. It can be dissolved by heating and adding alkali. This situation is most common when the weather is cold.
Phosphate and carbonate precipitation: if the urine is alkaline, there may be phosphate or carbonate precipitation, white, plus acid can dissolve. Carbonates produce bubbles when they are acid.
Urinary tract infection and urinary tract: the main bacteria appear pyuria and white blood cell related. Urine is milky white.
Chyluria: white, chyluria, urine, obstruction of renal lymphatic vessels caused by filariasis or other causes. This is easy to distinguish under the naked eye.
In the above 4 cases, the first two are generally not diseased. If the uric acid, phosphate and other crystals appear frequently in fresh urine, and accompanied by more red blood cells, the possibility of urinary stones should be suspected. Urinary tract infection occurs when the urine is cloudy and microscopic examination of the urine sediment reveals pus cells or white blood cells. As to the proteinuria based nephritis patients, fresh urine is generally not cloudy.