Urologists Warn; What Blood In Urine Reveals About Kidney Health

Your urine may seem like mere waste, but according to urologists, it’s a powerful indicator of your kidney function.

Changes in colour, smell, or volume could be early signs of underlying health issues that demand attention.

Dr Hari Prasad N, Urologist and renal transplant specialist at Manipal Hospital, Vijayawada, says a healthy adult usually passes 1.5 to 2 litres of urine daily. “Normal urine is straw yellow in colour and mildly odorous,” he explains. “Darker or smelly urine often signals dehydration or infection.”

Dr Sanman Gowda, Head of Urology at KMC Hospital, Mangalore, highlights that the kidneys constantly filter toxins from our blood, and the resulting urine often reveals silent symptoms.

He further added, “Pain or burning can suggest an infection, while difficulty passing urine may point to prostate issues in men or bladder outlet obstruction in women.”

Blood in the urine, called haematuria, should never be ignored.

Dr Gowda explains it may be linked to kidney stones, tumours, or infections. Dr Prasad adds that up to 25% of patients with haematuria are later diagnosed with kidney, bladder, or prostate cancers.

What Different Urine Signs Might Mean

• Frothy Urine is one of the earliest signs of kidney dysfunction. Often linked to protein loss (proteinuria) due to diabetes, hypertension, or infections.
• Cloudy or Milky Urine may indicate pus due to severe urinary tract infections or a condition like chyluria, where dietary fats are expelled via urine.
• Coloured Urine could signal glomerulonephritis, an inflammatory kidney condition that, if untreated, leads to permanent damage.
• Polyuria means passing more than 3 litres of urine daily may indicate early-stage diabetes.
• Oliguria means passing less than 400 ml daily, which could be due to kidney damage or even heart failure.
• Anuria is a complete stop in urine output that can result from acute renal injury or blockage.

“If you notice back pain, vomiting, changes in urine colour, or a drastic drop in urine volume, seek medical help immediately,” says Dr Gowda. He stresses that early diagnosis leads to better recovery and can prevent permanent damage.

Your kidneys work silently but tirelessly. Don’t overlook what your urine is telling you. Consulting a urologist at the first sign of abnormality may protect you from more serious health issues down the line.

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