In message <[log in to unmask]>, [log in to unmask] writes
>Dear Mailbase Members,
>
>We are in the process of moving our emergency service up to our main
>laboratory and are trying to encourage the porters to bring gas samples
>straight to the lab from the wards rather than using the pneumatic system.
>
>We have been looking at the effect of sending blood gas samples by our
>pneumatic tube delivery system and have noticed that some samples have a
>significantly increased pO2 content when sent via the pod rather than being
>hand delivered to the lab.
>
>We are interested to hear from other users who have experience of sending gas
>samples by pneumatic tube systems and whether they have noticed any adverse
>effects on results? Are there any ways that the problem can be alleviated?
>
>Thanks,
>
>Kathryn MacKinnon,
>Department of Clinical Chemistry,
>Royal Liverpool Hospital.
>Liverpool.
We can confirm this
This is due to a pressure effect on microbubbles and is abolished by usibg a
pressure sealed sample transport system.
We have an abstract Clin Chem 1997 43:s115
--
paul collinson
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