Urine output vs input - what’s normal?

[hippohector]

I’ve always thought I wee a lot - it’s a standing joke in my family that whenever we go out I always have to be near a toilet.

I mentioned it to the doctor and she told me to keep a record over a few days of input vs output. There’s even an app you can get on your phone to log it!

So I’ve been doing this (on days when I am at home obviously) and religiously measuring my fluid intake, and weeing in a plastic measuring jug to measure the output.

Typically, I drink about 2100ml a day (combination of tea/coffee but mainly water) and my urine output is about 2800ml. So my output is 700ml more than my input.

I know there is water in food as well, but is this normal? I feel like my body is not retaining any fluid and I’m constantly needing to wee.
Does anyone know what is normal?

I'd love to know this too, as I'm the same OP.

Normal urine output is half ml per kg per hour

Does it make a difference if you cut out caffeine? It's a diuretic, so it makes your body produce more urine.

@ Elizaeliza - sorry, I’m being really thick here.. if I weigh 68kg how do I work that out?

0.5 x 68 = 34
34 x 24 (hours) = 815
So 815ml per hour??
That’s not correct is it?

Does it make a difference if you cut out caffeine? It's a diuretic, so it makes your body produce more urine
A bit, although I only drink two cups of tea a day (600ml total)

Bump?

That would be 815ml per day not per hour! Now where's that old jug......

815ml per day?
I urinate between 2500ml - 3000ml a day

I think your input and output are pretty normal OP. I recently had an appointment with a bladder nurse and my figures were similar and she didn’t comment or note it in the letter to my GP, so I assume it was normal.

How many wees are you doing a day? Up to 8 is considered normal.

Based on the numbers given by @Elizaeliza it's 815ml a day but a quick google suggests urinary output is normal in the range of 0.5-1.5ml/kg/hour or even up to 2ml/kh/hour.
1.5ml/kg/hour for 68kg is 2448ml a day so you're probably at the top end of normal but nothing too extreme.

What about insensible loss like breathing and sweating which I thought was about 500mls a day.

has diabetes been ruled out?

Symptoms You Should Know
Excessive thirst.
Frequent urination.
Fatigue.
Losing weight without trying to.
Blurred vision.
Slow healing sores.
Frequent infections.
Tingling in your hands or feet.

The doctor did a dip test and apparently my glucose levels were ok from that - never had a blood test though.
I get thirsty a lot, urinate frequently and experience fatigue, but don’t have any of the other diabetes symptoms And definitely not losing weight without trying... in fact quite the opposite

Not sure about normal urine output - but should avoid input if possible .

Half a ml per kg per hour is not the expected output, it's the mini an that's acceptable to show working kidneys.

If you had more output of such a high level you would be losing weight.
There is a lot of water in food.