Are Small Bubbles in Urine After Sitting Normal? A Urology Perspective - Urology

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Urinary issues


Hello, I would like to ask the doctor about my urine.
After letting it sit for a while, I still notice some small, dense bubbles.
Is this normal? I have a history of panic and anxiety disorders, and I found online that this might not be normal, so I want to ask the doctor if having a few small bubbles in the urine after it has settled is truly abnormal.

Jiao Lü de Nan Ren, 50~59 year old female. Ask Date: 2024/07/17

Dr. Du Shixi reply Urology


Hello: Many people experience this phenomenon.
If the urine test results are normal, then there is no issue.
Wishing you good health.

Reply Date: 2024/07/17

More Info


The presence of small bubbles in urine after it has been sitting for a while can be a common observation and is not necessarily a cause for concern. From a urology perspective, there are several factors to consider when interpreting this phenomenon.

Firstly, the formation of bubbles in urine can be influenced by various factors, including the concentration of the urine, the presence of proteins, and the method of urination. When urine is concentrated, it may contain higher levels of waste products, which can lead to the formation of bubbles. Additionally, if there are proteins present in the urine, this can also contribute to foaming. However, the presence of small bubbles does not automatically indicate a pathological condition.

In healthy individuals, urine may occasionally appear bubbly due to the natural processes of urination and the physical properties of the urine itself. For instance, if urine is expelled with a strong stream, it can create bubbles as it hits the toilet water. Furthermore, if the urine has been sitting for a while, the gases dissolved in the urine may escape, leading to the formation of bubbles.

However, if the bubbling is persistent and accompanied by other symptoms, such as changes in urine color, odor, or the presence of pain during urination, it may warrant further investigation. Persistent foamy urine can sometimes indicate the presence of proteinuria, which is an abnormal amount of protein in the urine and can be a sign of kidney issues. Conditions such as glomerulonephritis, nephrotic syndrome, or other renal diseases can lead to protein leakage into the urine, resulting in foamy urine.

In your case, since you mentioned that you have anxiety and have been researching this issue online, it is important to approach the situation with a clear mind. Anxiety can often amplify concerns about health, leading to unnecessary worry. If you have not experienced any other symptoms and your urine appears normal otherwise, it is likely that the small bubbles you observe are benign.

To ensure peace of mind, it is advisable to consult with a healthcare professional, particularly a urologist, who can perform a urinalysis to check for any abnormalities. A urinalysis can help identify the presence of proteins, blood, or other substances that may indicate an underlying condition. If the results are normal, you can be reassured that the small bubbles are likely a normal occurrence.

In summary, small bubbles in urine after it has been sitting for a while can be normal and are often influenced by various factors. However, if you have concerns or if the bubbling is accompanied by other symptoms, it is best to seek medical advice for a thorough evaluation. Regular check-ups and open communication with your healthcare provider can help alleviate concerns and ensure your urinary health is monitored appropriately.

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