Realising that there’s blood in your urine is definitely something very alarming regardless if you’re a man, woman, young or old. In medical classification, the presence of blood in the urine, also known as hematuria, can be classified into two namely Gross hematuria anda Microscopic hematuria. Gross hematuria refers to the presence of blood in the urine that can be very easily noticeable, staining your urine into slightly pinkish or dark brown, resembling the colour of coca-cola. Microscopic hematuria on the other hand, refers to the presence of blood in the urine only detectable through laboratory tests.

Where is the blood in the urine coming from?

Blood in the urine can originate from a number of structures and organs especially those that make up the urinary system such as the kidney, the ureter, the bladder and the urethra. However, the presence of blood in your urine can also be due to nearby structures and organs around the urinary system especially near the bladder, as well inflammatory processes affecting the body or the urinary system.

Less serious cause of blood in the urine

Vigorous exercise

Excessively vigorous exercise can lead to hematuria and this condition is also known as runner’s bladdermarathoner’s bladder or even stress bladder. Usually, the presence of blood in the urine will disappear after some rest or around 72 hours after the activity. However, it is also worth noting that if you have a pre-exsiting kidney condition or any other problems related to the urinary system, vigorous exercise can further exacerbate the damage of this condition and also lead to the hematuria.


Trauma to the genital or part of the body in close proximity to the bladder or the kidney can also result in bleeding into the urinary system. Trauma can be caused by contact sports, vigorous sex, mishap or accidents during sex and accidents in general.

More serious cause of blood in the urine


Infection here refers to infection of any part of the geniro-urinary system, such as the kidney (Pyelonephirits), bladder infection (Cystitis) and the infection of the urethra (urethritis). This also include sexually transmitted infection.


Stones can be formed and dislodged to other part of the urinary system starting from the kidney, ureter, bladder and urethra. Usually, the presence of stones is accompanied strongly by the presence of colicky pain, localised to the site of the stone.


Aside from the cancer of the urinary system such as kidney cancer or bladder cancer, cancer of the surrounding structures of the urinary system may also grow and invade organs such as the bladder and subsequently lead to hematuria or the presence of blood in the urine. Such cancer includes prostate cancer and bowel cancer. In addition, prostate enlargement can also encroach the bladder and cause the same symptom.

Other Diseases

Red blood cell disorder such as Sickle Cell Anaemia can lead to massive haemolysis or the destruction of the red blood cells in the body, which subsequently give rise to the presence of blood in the urine after being excreted through it. Disease such as Haemolytic Uremic Syndrome can also cause hematuria as well. Moreover, autoimmune conditions such as Haemolytic Uremic Syndrome can damage the kidney and lead to leakage of blood into the urinary system. Inherited disorders such as Alport syndrome and Polycystic Kidney Disease can cause blood to be present in the urine as well

When you consult a doctor, aside from the usual history taking and examination, necessary tests will also be done to accurately identify the cause of your hematuria. Although most of the time, the cause is not serious, there are serious causes for the presence of blood in the urine, which necessitates attention. diberikan perhatian.

Hello Health Group does not give medical advice, diagnosis or treatment.

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