First Morning Specimen

The first morning urine is the ideal screening specimen because it is more concentrated than the random specimen.

Furthermore, the first morning urine is also important for preventing false-negative pregnancy tests and for evaluating orthostatic proteinuria.

How to collect it? The patient is instructed to immediately collect the specimen upon arising and deliver it to laboratory within one hour.

Related Topic: Medical Technology (Calcium Oxalate in Urine)

15 comments:

Wayne said...

So what is the importance of delivering the specimen within 1 hour? And if you can't is it best to refrigerate it?

Jane Jane said...

@Wayne... Thanks for dropping by.
The importance of delivering the specimen within one hour is to prevent bacterial growth. Refrigeration is one method of preserving the urine. However, disadvantages of using this method should also be considered.

your "Health Assistant" said...

Happy Healthy Holidays!!!
for you and your family!

HealthAssistant

Atif said...

Interesting post.
I didn't know about the early morning sample.

Jane Jane said...

@your "Health Assistant"... happy holidays too and thanks for dropping by.
@Atif...Thanks. Maybe because the most common specimen is the random specimen.

Laane said...

It's also important because some important elements desintegrate over time.


I want to wish you Merry Christmas and a Happy New Year!

Jane Jane said...

@Laane...Merry Christmas too and a Happy New Year to you and your family. Thanks for dropping by.

simplyjacy said...

that's what i have been told also.

Happy New Year!

Tom Sawyer said...

Is it really one hour? I've heard something like 3 hours before; one hour seems to be pretty quick. It seems like that is something that would need to be planned for the night prior.

Jane Jane said...

@Tom Sawyer... That is to prevent bacterial growth.
Thanks for dropping by.

yeokeehui@gmail.com said...

I always wonder why. Now I know. Thanks.

pehpot said...

Ah so that is the reason why they say it on pregnancy test package, that you do the test on the morning. This is a great info for non medicals like me. I remember a funny incident where my friend collected a urine sample but has to travel an hour before she gets to the hospital. Funny because her urine test result was really awful.

SLColman said...

Great Information!

Grog said...

This is was a great post.
I know about the one hour rule now.

Adult Diapers said...

Very interesing. This is probably common knowledge to more educated medical staff, but I didn't know.

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