General urine analysis. Standards for general urine analysis. General urine analysis, interpretation. Urine norms in adults, women and men. Urine norm in children.


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Transparency (turbidity)

Normal urine is clear. Cloudiness of urine can be the result of the presence of red blood cells, leukocytes, epithelium, bacteria, fat droplets, precipitation of salts, pH, mucus, urine storage temperature (low temperature promotes the precipitation of salts).

In cases where the urine is cloudy, you should find out whether it is immediately cloudy, or whether this cloudiness occurs some time after standing.

ChildrenFull transparency
MenFull transparency
WomenFull transparency

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  • Preparation for the procedure

    Preparation for a general urine test begins the day before the collection of biomaterial.
    Certain foods, the amount of fluid you drink, taking medications and dietary supplements, and intense physical activity can distort the results of the study. The day before collecting urine, you should avoid foods that can affect the color of your urine: for example, beets and blueberries give your urine a reddish tint; consuming large amounts of carrots or carotene supplements may change the color of your urine to orange.

    On the eve of urine collection, it is not recommended to drink alcohol, coffee, dietary supplements or strong tea. If possible, you should limit your intake of diuretics (diuretics). It is necessary to exclude serious physical activity, as well as visiting a bathhouse or sauna.

    Women during menstruation are not recommended to donate urine for testing, since even a small amount of blood will significantly distort the test result.

    You should warn your doctor about the medications you are taking, as well as about invasive examinations (for example, cystoscopy) on the eve of the test.

    Method of collecting urine for general analysis

    1. It is necessary to prepare in advance a disposable sterile container for collecting urine (can be purchased at a pharmacy or taken from the INVITRO medical office).
    2. Before collecting urine, hygienic treatment of the external genitalia should be carried out, without using antibacterial and disinfectants.
      For children, you need to adhere to the following rules: girls are washed from front to back (from the pubis to the tailbone) so that bacteria that populate the intestines do not enter the urinary tract. Only wash the skin with soap, since contact with mucous membranes causes irritation, dryness and itching. In boys, the glans penis is fused with the foreskin (physiological phimosis), so it is not recommended to forcefully open the glans penis, as this leads to trauma to the delicate tissue. You just need to slightly pull the skin and rinse with water, but it is unacceptable to direct a stream of water into the opening of the urethra.
    3. For general analysis, as a rule, the first morning urine sample is collected. First, release a small amount of urine into the toilet, then, without interrupting urination, place a container and collect approximately 50 ml of urine. In this case, it is necessary to ensure that the container does not touch the skin and mucous membranes.
    4. After collecting urine, close the container tightly with a screw cap.
    5. Special urinals have been developed for newborns and infants. You should not use urine squeezed out of a diaper or diaper - the results will be unreliable, since the diaper is a kind of filter for microscopic elements of urine, which are counted during the study.
    6. When taking the test during the day, it is not recommended to drink large amounts of water, tea, coffee or diuretics to stimulate urination.

    The turnaround time for a general urine test is usually 1 business day.

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    Normal urinalysis indicators in an adult

    Urine examination consists of determining the following properties and indicators:

    1. Organoleptic properties are assessed directly by a laboratory assistant without the use of equipment:
        color – from straw or bright yellow;
    2. the smell is specific and unobtrusive;
    3. foaminess – when shaking, little foam is formed;
    4. transparency is absolute.
    1. Physico-chemical qualities are recorded using test strips:
        density – 1.010 – 1.025;
    2. acidity (pH) – 5-7.
    1. Biochemical indicators are calculated by special analyzers using reagents:
        protein – up to 0.033 g/l;
    2. sugar – up to 1.0 mmol/l;
    3. bile pigments – bilirubin up to 8.5 µmol/l, urobilinogen up to 35 µmol/l;
    4. ketone bodies – up to 0.5 mmol/l;
    5. nitrites - no.
    1. The quality of urine sediment is assessed using an analyzer or in the traditional way - under a microscope:
        epithelium – up to 3-5 cells per field of view;
    2. mucus - no;
    3. blood cells - the norm of erythrocytes is up to 2 per p/z, leukocytes up to 5 per p/z;
    4. hemoglobin - no;
    5. cylinders - no;
    6. salt - no;
    7. bacteria - no;
    8. parasites - no;
    9. mushrooms - no.

    When faced with a ready-made urine test form, not everyone will be able to understand the abbreviation of its indicators and norms. Below is a table for deciphering urine analysis , which will help you cope with this.

    DesignationIndicator nameStandard with unit of measurement
    COLORcolorstraw
    pHacidity5-7
    S.G.density1,010 – 1,025
    PROproteinno or 0.033 g/l
    G.L.U.glucoseno or up to 1 mmol/l
    BILbilirubinno or up to 8.5 µmol/l
    UROurobilinogenno or up to 35 µmol/l
    KETketone bodiesno or up to 0.5 mmol/l
    BLDred blood cellsup to 2 in p/z
    LEUleukocytesup to 5 in p/z
    NITsaltNo

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    What may affect the results

    Factors that may distort the results of the study:

    1. Violation of hygiene procedures and urine collection techniques.
    2. Drinking large or small amounts of water.
    3. Consuming foods, medications, or dietary supplements that change the color of urine.
    4. Menstruation.
    5. High blood pressure.
    6. Intense physical and psycho-emotional stress on the eve of urine collection.
    7. Visiting a bathhouse, sauna, hypothermia.
    8. Carrying out invasive procedures on the urinary tract a week before the test.

    You can take a general urine test at the nearest INVITRO medical office.
    A list of offices where biomaterial is accepted for laboratory research is presented in the “Addresses” section. Urine examination includes the study of physical and chemical properties, as well as microscopy of sediment.

    Physical properties: quantity, color, odor, transparency, relative density (specific gravity), urine reaction (pH).

    Chemical properties: determination of protein, glucose, ketone bodies, urobilinogen, bilirubin, hemoglobin, nitrites, leukocyte esterase.

    Microscopy: identification of erythrocytes, leukocytes, cells of flat, transitional and renal epithelium, cylinders, crystals, mucus, bacteria, fungi.

    Specific gravity of urine (g/l)

    In a healthy person, it can fluctuate over a fairly wide range throughout the day, which is associated with periodic food intake and loss of fluid through sweat and exhaled air.

    Children under 1 month1002-1020
    Children 2 – 12 months1002-1030
    Children 1 year - 6 years1002-1030
    Children 7 - 14 years old1001-1040
    Children 15 - 18 years old1001-1030
    Men1010-1025
    Women1010-1025

    Interpretation

    The specific gravity of urine depends on the amount of substances dissolved in it: urea, uric acid, creatinine, salts.

    • A decrease in the specific gravity of urine (hyposthenuria) to 1005-1010 g/l indicates a decrease in the concentrating ability of the kidneys, an increase in the amount of urine excreted, and drinking plenty of fluids.
    • An increase in the specific gravity of urine (hypersthenuria) of more than 1030 g/l is observed with a decrease in the amount of urine excreted, in patients with acute glomerulonephritis, systemic diseases, and cardiovascular failure; it may be associated with the appearance or increase of edema, large loss of fluid (vomiting, diarrhea ), toxicosis of pregnant women.
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