How Much Urine Output is Normal?

Urine is considered as a waste product of our body. Urine is made up of fluid which contains waste or excess particles from our body. Our kidneys are the ones responsible in producing urine. As blood is pumped to our kidneys, small filters are able to screen the waste materials from those that are essential for cell use. Once these waste products are separated it is then collected as urine, which is banked or accumulated in our bladder. Once the bladder is already full, we will now begin to feel the urge of urinating. This is when we can now expel or eliminate the waste away from our body. However, many of us are still confused when it comes to the normal amount of urine that should be expelled from our system. This makes a lot of us confused whether or not our output is still considered within the expected limit or amount of urine. So the question now is; how much urine output is normal?

We all know that the more fluid intake we have, the more output we are going to expect. This clearly shows that our fluid intake must be directly proportional with our fluid output. Aside from urinating, sweating and other insensible body losses such as respiration is another way for fluid wastes to be expelled from the body. This may give us a slightly lower urine output compared to the total fluid intake we have. However, urinating is still considered the major path of releasing these waste products from our system. But what is the normal amount?

If we were to base the normal urine output to an average adult person, then we could expect to have a result that is 0.5ml/kg/hr. This would give us a rough estimation of about 30 to 40 ml per hour. For children, the output rate is about 1ml/kg/hr. As for adults, some references do consider the same rate of urine output with children. This is because the rate 0.5ml/kg/hr is already considered the low normal amount. This means that whenever a significant decrease is seen based on this standard rate, it would already be difficult for us to intervene since any deviation lower from this rate could already be hard to recover.

If we were to total the urine output in a day, then we could expect to have at least 1.5 liters per day. Nevertheless, it is more advisable to have more fluid intake in order to increase the volume of our output. As for women, an output of 2 liters is considered normal while men can even go as much as 3 liters per day. However, it is a must that fluid replacement is done in order to prevent the chance of having dehydration. Too much urine output, which is not equal to the intake, is called polyuria, which is common in diabetic people. The absence of urine is called anuria, while difficulty in urinating is termed as dysuria. These are the facts that we need to learn about urine as well as the normal output that is expected for us to have in an hour.

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