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2. 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]

3. Hematuria - Wikipedia

   en.wikipedia.org/wiki/Hematuria

   Free hemoglobin may be found in the urine resulting from hemolysis, and myoglobin may be found in the urine resulting from rhabdomyolysis (muscle breakdown). [6] [5] Thus, a positive dipstick test does not necessarily indicate hematuria; rather, microscopy of the urine showing three of more red blood cells per high power field confirms ...

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. 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 ... per High Power Field (HPF) RBC casts: n/a 0 / negative [2] White blood ...

6. Urinalysis - Wikipedia

   en.wikipedia.org/wiki/Urinalysis

   Dark yellow-brown to green urine may suggest a high concentration of bilirubin, a state known as bilirubinuria. [26] [27] Red urine often indicates the presence of red blood cells or hemoglobin, but can also be caused by some medications and the consumption of foods containing red pigments, [26] such as beets.

7. Hemosiderinuria - Wikipedia

   en.wikipedia.org/wiki/Hemosiderinuria

   Hemosiderinuria (syn. haemosiderinuria) is the presence of hemosiderin in urine. [1] It is often the result of chronic intravascular hemolysis, in which hemoglobin is released from red blood cells into the bloodstream in excess of the binding capacity of haptoglobin. The function of haptoglobin is to bind to circulating hemoglobin, thereby ...