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  2. Reference ranges for urine tests - Wikipedia

    en.wikipedia.org/wiki/Reference_ranges_for_urine...

    Reference ranges for urine tests are described below: Measurement Lower limit Upper limit ... Red blood cells (RBCs) 0 [4] [2] 2 [2] - 3 [4] per High Power Field (HPF ...

  3. Urinalysis - Wikipedia

    en.wikipedia.org/wiki/Urinalysis

    In highly concentrated urine they may shrivel and develop a spiky shape, which is termed crenation, while in dilute urine they can swell and lose their hemoglobin, creating a faint outline known as a ghost cell. A small quantity of red blood cells in the urine is considered normal. [93] [97] An increased level of RBCs is termed hematuria.

  4. Urine test strip - Wikipedia

    en.wikipedia.org/wiki/Urine_test_strip

    The normal number of red blood cells in urine should not usually exceed 3 per high power field. [13] A urine test strip showing positive for blood can also indicate hemoglobinuria, which is not detectable using a microscope due to the lysis of red blood cells in the urinary tract (particularly in alkaline or dilute urine), or intravascular ...

  5. Hematuria - Wikipedia

    en.wikipedia.org/wiki/Hematuria

    Hematuria can be classified according to visibility, anatomical origin, and timing of blood during urination. [1] [6]In terms of visibility, hematuria can be visible to the naked eye (termed "gross hematuria") and may appear red or brown (sometimes referred to as tea-colored), or it can be microscopic (i.e. not visible but detected with a microscope or laboratory test).

  6. Hemoglobinuria - Wikipedia

    en.wikipedia.org/wiki/Hemoglobinuria

    Hemoglobinuria is a condition in which the oxygen transport protein hemoglobin is found in abnormally high concentrations in the urine. [1] The condition is caused by excessive intravascular hemolysis, in which large numbers of red blood cells (RBCs) are destroyed, thereby releasing free hemoglobin into the plasma. [2]

  7. Reference ranges for blood tests - Wikipedia

    en.wikipedia.org/wiki/Reference_ranges_for_blood...

    Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...

  8. Urine cytology - Wikipedia

    en.wikipedia.org/wiki/Urine_cytology

    The Paris System for reporting urine cytology, version 2.0, ranging from negative to positive for high grade urothelial carcinoma. [1] Urine cytology is a test that looks for abnormal cells in urine under a microscope. The test commonly checks for infection, inflammatory disease of the urinary tract, cancer, or precancerous conditions.

  9. Urine test - Wikipedia

    en.wikipedia.org/wiki/Urine_test

    The value of urine for diagnostic purposes has been recognized since ancient times. Urine examination was practiced in Sumer and Babylonia as early as 4000 BC, and is described in ancient Greek and Sanskrit texts. [2] Contemporary urine testing uses a range of methods to investigate the physical and biochemical properties of the urine.

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