What is the urine sediment test for?
1. What is a urine sediment test?
There are 2 ways to check urine sediment: fresh and Addis sediment.
Fresh smear: You can collect urine midstream in the morning or any day of the day, put it in a test tube, take a drop of non-centrifugal urine and look for fresh urine sediment through a microscope with a 10 X objective; Addis residue: 6 am for the patient to urinate all the time in the night, record the time, drink 200ml of boiled water to cool. The patient then rests and urinates in the potty (washed with soap). 9 hours for the patient to urinate for the last time, then measure the amount of urine and record it on the test paper. Collect 10ml of urine and bring it to the laboratory.
2. What is the urine sediment test used for?
Check for a disease or infection of the urinary tract. Symptoms of a urinary tract infection, which may include: colored or foul-smelling urine, pain when urinating, painful urination, flank pain, blood in the urine or fever... : diabetes, kidney stones, a urinary tract infection (UTI), high blood pressure, or certain kidney or liver diseases.
3. Evaluation of urine sediment results
3.2. Pathology Hematuria: Gross hematuria: Blood in the urine in a large amount, the naked eye can see the urine is pink like meat wash to red, it will take a long time for the red blood cells to settle. The minimum amount of blood that begins to change urine color is about 1 ml of blood per 1 liter of urine. Urinalysis showed microscopic dense red blood cells.
If the red blood cells have been lysed, the urinalysis is positive for red blood cells, but the urinalysis will not show red blood cells.
In clinical practice, hematuria is seen in glomerulonephritis, renal tuberculosis and urinary stones (calyx - pyelonephritis, ureteral stones, bladder stones), cystitis, bladder cancer; may be due to systemic diseases (hematopoietic system diseases, coagulopathy).
About 1% of hematuria cases have no known cause.
Leukopenia: The white blood cells are disc-shaped, bright with many granules inside, can see the shape of intact white blood cells (size 1.5-2 times the size of red blood cells) or atrophy. small or concentrated into a cloud of pus (if the leukocytes have degenerated).
Other sediment components: Besides, some inorganic and organic substances can be deposited when the urine is left for a long time. If there are many crystals, there is a risk of forming kidney stones. Depending on physiological or pathological changes, urine contains crystals: urate, phosphate,... Other cells of medium and large size include epithelial cells, which are old cells that shed. However, it is not diagnostic if the number is small, but if it is high, it may be due to vulvovaginitis, urethritis, bladder or urinary tract infection. Epithelial cells with iridescent fatty inclusions are specific for nephrotic syndrome.
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