00:00
Okay so much talk about urine.
00:03
Let's talk about
why urine creatinine
is also called a
creatinine clearance test.
00:09
Oka now that's when
we have comparison but
what do you think?
What are your thoughts on that?
Why do you think a urine
creatinine is also called
a creatinine clearance test?
Okay, because it measures
how much creatinine has passed
through or by the
kidneys into the urine.
00:27
That's why they call it a
creatinine clearance test.
00:31
Remember to get great results.
00:32
We've got to have
consistent creatinine
and we've got to compare
the blood to the urine.
00:38
Now here's a urine
24-hour volume test.
00:41
You may see this ordered with
different kind of wording.
00:43
You may just called
a 24-hour urine test,
but I want you to keep in mind
there's a range of normal values.
00:51
These are not ones you're
probably familiar with
or that you seen much
in your textbooks.
00:55
But if we look at a 24-hour
urine sample a complete one
that only involves 24 hours,
you can see what the
values are there for males.
01:05
Look at the values for females.
01:08
Okay notice the females are
slightly different from males
and you know why at this point.
01:14
Now creatinine
clearance is calculated
these are the numbers that
you will most likely see
in your practice.
01:21
And remember these are the normals we
talked about earlier in the presentation.
01:25
Okay so everybody with me?
We're talking about a
creatinine clearance test.
01:30
We need a urine
sample for 24 hours.
01:32
You compare it to
a venous sample
because we're looking at
how much of that creatinine
was pulled out of the blood.
01:38
And dumped out into the urine.
01:40
Got that!
We know that males have a little
bit higher levels than females.
01:45
Good.
01:46
All right, let's keep going.
01:47
Let's talk a little bit about
that 24-hour urine test.
01:50
Now we have another video.
01:52
That's walks you
through all the steps.
01:54
So if you got an order
for a 24-hour urine
and we've got very clear
steps for you to see.
01:59
But I want to just kind of
bring up a couple things
while we're here in this video.
02:04
Now at the time the
collection is started.
02:06
Usually we started about 8 a.m.
Am
but it just depends
on where you are.
02:10
This is what a label
may look at a facility
where you're doing
this collection,
or a label that you would
send home with a patient
if they're doing this at home.
02:19
So let's say we start at 8 a.m.
02:21
You're going to ask the patient
to empty their bladder completely
but don't save that urine.
02:26
Okay,
so if I'm starting at 8 a.m.
02:28
I'm going to go to the
restroom empty my bladder,
but I'm not going to
save that specimen,
but I'm going to write
that time down in the date
on the start line.
02:36
So that's how I fill out
the first part of the label,
then whoo-hoo for
the next 24 hours.
02:42
I need to save all the urine and
add it to the same container.
02:46
Here's the part where people
get a little uncomfortable
because you got to keep
that container refrigerated.
02:51
You can walk them through
how to do that at home.
02:54
Most people are not
thrilled about that part
in the hospital will have
it in a special container
with some ice surrounded
and everybody knows
that's a 24-hour sample,
but you have to
keep it iced or cold
because you don't want to limit
you want to limit bacterial growth.
03:10
So that's the goal.
03:12
Start at a time, empty your
bladder, note that time
don't save that sample.
03:17
Then when the next
time you do pee
you put that in the container
and you've got to keep it cold.
03:23
Now exactly and we're not
kidding exactly 24 hours
after the first one,
you want to empty your bladder and
add that portion to the container.
03:33
It doesn't matter if you
feel like you need to go
you think you need to
go, you don't need to go,
you need to get everything
out of your bladder
that's left at that 8 a.m.
time slot.
03:42
Then you enter the date
and time on the end line
put the name on it, identify it
and you're going to
send it to lab or
bless you if you had
to do this at home,
you're going to drive it into the
lab or your physician's office.
03:55
So when you see someone talk
about a 24-hour urine sample,
empty the bladder,
note the time.
04:02
And everything after that you
keep adding to the sample.
04:07
Keeping it cold or refrigerated.
04:10
At 8 a.m., the next
day, 24 hours later.
04:13
You need to try to
use the restroom again
to empty everything out
possible from your bladder.
04:19
Then that is a complete
24-hour sample.
04:24
So why does it have to
be exactly 24 hours?
I know it's kind of
annoying is it most of us
don't like to be
told what to do,
but this is why it's
really important.
04:35
If that sample doesn't
reflect accurately 24 hours.
04:39
Your lab results are not
going to be accurate.
04:42
So if you get less than
24 hours worth of urine,
that's an incomplete
urine collection
and that way your creatinine
level the elimination of it
may be too low.
04:52
Not accurate.
04:54
Well, what if you go just
a way bit over 24 hours,
maybe you sleep in,
you're going to have to start again
because that could cause,
that could show us
a too higher rate
of elimination of creatinine.
05:05
So it's got to be set your
alarm clock 24 hours strict
of how much urine
your body put out
in order to get the
most accurate results.