Urine Output Issues: When to Seek Medical Advice - Urology

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Urinary volume issues?


Hello Doctor, I have hypertension, but I am controlling it with medication.
A few years ago, during a physical examination, my serum creatinine level was found to be 1.3.
Therefore, I have been undergoing regular monitoring for the past few years, and my levels have remained at 1.3.
Recently, I noticed that my urine output seems to be problematic.
On average, my daily urine output is about 1000 to 1500 cc, and I have recorded my urine volume per void, which ranges from 100 to 220 cc.
I have tried to hold my urine, but when I can no longer hold it, the volume is only about 250 cc.
I also attempted to drink 600 cc of water within an hour, but it only resulted in frequent trips to the bathroom, with each volume varying between 100 to 200 cc.
I would like to know if this is considered normal, and what tests I should undergo.
Thank you!

Lao Yao, 40~49 year old female. Ask Date: 2013/08/09

Dr. Xu Weikai reply Urology


Lao Yao: Hello, actually, a urine output of 100-220 milliliters is considered quite good.
The maximum can be up to 250 milliliters.
It's on the smaller side, but if it doesn't affect your daily life, you shouldn't worry about it.
Your daily water intake is also sufficient.
Since your bladder has a smaller capacity and you drink more water than average, this results in more frequent urination.
As long as you get used to it, no treatment is necessary.
If you really want to investigate further, you can undergo urodynamic testing to check for any issues with bladder capacity, prostate, or urethra.

Reply Date: 2013/08/09

More Info


When it comes to urine output issues, especially in the context of existing health conditions like hypertension and elevated creatinine levels, it is essential to approach the situation with careful consideration. Your reported urine output of 1000 to 1500 cc per day, with individual voids ranging from 100 to 220 cc, does raise some questions about your urinary function and overall kidney health.

Firstly, it is important to understand what constitutes normal urine output. For most adults, normal urine output is generally considered to be between 800 to 2000 cc per day, depending on fluid intake, hydration status, and other factors. Your average output seems to fall within this range; however, the volume per void appears to be on the lower side, especially given your attempts to increase fluid intake.

The fact that you experience a strong urge to urinate but only produce a small amount of urine (250 cc at most) may indicate a few potential issues. One possibility is that you could be experiencing bladder dysfunction, which can manifest as urgency and frequency without a corresponding increase in volume. This condition is often referred to as Overactive Bladder (OAB), which can be caused by various factors including nerve issues, bladder inflammation, or even certain medications.

Another consideration is the potential for urinary retention, where the bladder does not empty completely, leading to a sensation of fullness and urgency without adequate output. This can sometimes occur in individuals with a history of hypertension or other underlying conditions that may affect bladder function.

Given your history of elevated creatinine levels (1.3), which indicates a potential issue with kidney function, it is crucial to monitor your renal health closely. Elevated creatinine can be a sign of chronic kidney disease (CKD), and changes in urine output can be an important indicator of kidney function. Therefore, it is advisable to seek medical advice if you notice any significant changes in your urinary habits, especially if accompanied by other symptoms such as swelling, fatigue, or changes in blood pressure.

In terms of what checks you should consider, a few tests may be beneficial:
1. Urinalysis: This test can help identify any signs of infection, blood, or protein in the urine, which can provide insights into kidney function and urinary tract health.

2. Ultrasound of the kidneys and bladder: This imaging test can help visualize the anatomy of your urinary tract and identify any structural abnormalities that may be contributing to your symptoms.

3. Bladder function tests: These may include urodynamic studies, which assess how well the bladder and urethra store and release urine.

4. Follow-up with a nephrologist: Given your elevated creatinine levels, it may be beneficial to consult a kidney specialist who can provide a more comprehensive evaluation of your renal function and any necessary interventions.

In summary, while your urine output may fall within the normal range, the characteristics of your voiding patterns and your medical history warrant further investigation. It is advisable to consult with your healthcare provider to discuss your symptoms in detail and determine the appropriate diagnostic steps to ensure your urinary and kidney health are properly managed. Early intervention can be key in preventing further complications, especially in the context of existing health conditions.

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