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Published on: 8/20/2026

Does the appearance of cloudy urine indicate pus in the urethra?

Yoshinori Abe

Reviewed by Yoshinori Abe, MD

Internal Medicine

Cloudy urine has many possible causes, ranging from mild dehydration to urinary tract infections (UTIs), kidney stones, sexually transmitted infections, or pus in the urethra (pyuria). Because the underlying cause can vary widely in severity, identifying the correct reason matters for choosing the right treatment.

Since symptoms like cloudy urine can overlap across many conditions, guessing isn't your best option—but waiting isn't ideal either. Taking a free, instant, online symptom check can help you quickly narrow down likely causes based on your unique symptoms, understand urgency, and decide your next steps with confidence before speaking to a healthcare provider.

Reviewed for medical accuracy: 07/15/2026

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Explanation

Cloudy urine is a common occurrence and can be caused by multiple factors. While it may indicate the presence of pus, which may suggest an infection, there are other reasons urine may appear cloudy. Cloudy urine can result from substances like phosphates, urates, or other materials in the urine.

Possible Causes of Cloudy Urine:

  1. Pus or Infection: Sometimes, cloudy urine may indicate an infection, such as a urinary tract infection (UTI), where pus is present.
  2. Phosphates and Urates: These are naturally occurring substances that can make urine appear cloudy.
  3. Other Factors: Dehydration, diet, or certain medications can also affect urine clarity.

It's essential to note that the appearance of urine alone is not a reliable indicator of an underlying condition. Cloudy, foul-smelling urine is not sufficient for diagnosing an infection. If you notice persistent changes in your urine's appearance, try our free symptom checker to better understand your symptoms before consulting a healthcare provider for further testing and diagnosis.

(References)

  • Simerville JA, Maxted WC, & Pahira JJ. (2005). Urinalysis: a comprehensive review. American family physician, 15791892.

  • Vera M, Molano A, & Rodríguez P. (2010). Turbid white urine. NDT plus, 25949403.

  • Jump RL, Crnich CJ, & Nace DA. (2016). Cloudy, Foul-Smelling Urine Not a Criteria for Diagnosis .... Journal of the American Medical Directors Association, 27217095.

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