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Also known as: Blood in the urine

What is haematuria?

Haematuria is blood in the urine. This is not a normal finding, but it is not uncommon and, has many possible causes. Your doctor will want to investigate further to find the cause of the blood.

Blood in urine may be easily visible or it may be present in such tiny amounts that it is only detected during a medical examination when a urinalysis (or dip stick test) is performed. Urine is normally clear and a shade of yellow that varies from pale straw to light amber, depending on the concentration of the urine. The colour of urine is frequently different when there is blood in it, but it may not necessarily be red. 

  • If there is enough blood present, the urine may be pink, red, brown or tea-coloured. This is also called gross or visible haematuria.
  • When blood in urine is not visible and is only present in very small amounts, this is called microscopic haematuria. Microscopic haematuria will not alter the colour of the urine.

Many of the causes of haematuria involve the urinary tract, which consists of two kidneys, two ureters, a bladder, and a urethra.

  • Urine is produced continuously by the kidneys as they filter wastes out of the blood.
  • Urine moves from the kidneys through the ureters into the bladder, where the urine is stored, before being eliminated through the urethra during urination.

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