Well, I'm not having any tea the next time I come to
visit Basildon! I've found this in tapwater from
sluicerooms where there has been contamination of the
tap outlet by urine samples thrown about with
abandon.Tapwater will also give positive for blood on
urinalysis strips if any bleach-containing product has
been used on the tap.

Stick to the whiskey.
--- "Hogan, Tim" <[log in to unmask]> wrote:

> We have also observed weak positive POCT urine hCG
> results with Basildon Tap
> Water. Is this also related to Essex girls?  The
> observation was noted when
> one of the POCT sites rang to say that they
> suspected a false positive
> result and so did what they thought was good quality
> control and tried the
> tap water. 
> 
> Tim Hogan
> Basildon
> 
> -----Original Message-----
> From: Janice Still [mailto:[log in to unmask]] 
> Sent: 22 December 2005 14:03
> To: [log in to unmask]
> Subject: Re: false negative pregnancy tests
> 
> The major source or problems is user error, whether
> as
> POCT or unfortunately, in the lab too.
> I was contacted by a GP livid that a patient for
> RoAccutane treatment had been sent home following a
> positive urine hCG test, and had tested negative in
> his surgery later that day. The urine sample
> (labelled
> for once!) was recovered and checked and was still
> found positive. The GP confirmed that the urine hCG
> kit he was using was a high sensitivity kit, and
> said
> the patient had not passed a very dilute urine.
> "mind
> you, she only passed a few drops so I added an equal
> volume of water to get enough".
> 
> I have found errors occurring due to very poor
> lighting in sluice rooms where the nurses could not
> see the very faint line of early gestation; where
> nurses thought that 30 seconds was sufficient time
> to
> allow; where a nurse thought that the patient test
> line had to be the same intensity as the control
> line
> etc. False negatives due to user error are more
> common
> than we suspect I fear.
> Jan Still
> and happy Christmas to everyone!
> 
> Mrs. J. Still,
> POCT Manager,
> Biochemistry Dept,
> Watford General Hospital. 01923-217998.
> The views expressed in this message are personal and
> do not reflect West
> Herts NHS Hospitals Trust policy.
> 
> 
> 		
>
___________________________________________________________
> 
> To help you stay safe and secure online, we've
> developed the all new Yahoo!
> Security Centre. http://uk.security.yahoo.com
> 
> ------ACB discussion List Information--------
> This is an open discussion list for the academic and
> clinical
> community working in clinical biochemistry.
> Please note, archived messages are public and can be
> viewed
> via the internet. Views expressed are those of the
> individual and
> they are responsible for all message content.
> 
> ACB Web Site
> http://www.acb.org.uk
> List Archives
>
http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html
> List Instructions (How to leave etc.)
> http://www.jiscmail.ac.uk/
>
********************************************************************************
> 
> The information contained in this email may be
> subject to public disclosure 
> under the Freedom of Information Act 2000. Unless
> the information is legally
>  exempt from disclosure, the confidentiality of this
> email, and your reply, 
> cannot be guaranteed. It is intended solely for the
> addressee. Please notify 
> the sender immediately if you are not the intended
> recipient. Access to this 
> email by anyone else is unauthorised. If you are not
> the intended recipient, 
> any disclosure, copying, distribution or any action
> taken or omitted to be 
> taken in reliance on it, is prohibited and may be
> unlawful.Any views expressed 
> in this email are those of the individual, and may
> not represent the views of 
> Basildon and Thurrock University Hospitals NHS
> Foundation Trust.
> 
> The presence of this disclaimer indicates that the
> email has been virus scanned.
> Although this email and any attachments are believed
> to be free of any virus, or 
> any other defect which might affect any computer or
> IT system on which they are 
> received and opened, it is the responsibility of the
> recipient to ensure that they 
> are virus free. Basildon and Thurrock University
> Hospitals NHS Foundation Trust 
> accepts no responsibility for any loss or damage
> arising in anyway from receipt or 
> use thereof. If you received this in error, please
> contact the sender and delete 
> the material from any computer.
> 
>
********************************************************************************
> 
> ------ACB discussion List Information--------
> This is an open discussion list for the academic and
> clinical
> community working in clinical biochemistry.
> Please note, archived messages are public and can be
> viewed
> via the internet. Views expressed are those of the
> individual and
> they are responsible for all message content.
> 
> ACB Web Site
> http://www.acb.org.uk
> List Archives
>
http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html
> List Instructions (How to leave etc.)
> http://www.jiscmail.ac.uk/
> 


Mrs. J. Still,
POCT Manager,
Biochemistry Dept,
Watford General Hospital. 01923-217998.
The views expressed in this message are personal and do not reflect West Herts NHS Hospitals Trust policy.


	
	
		
___________________________________________________________ 
Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com

------ACB discussion List Information--------
This is an open discussion list for the academic and clinical
community working in clinical biochemistry.
Please note, archived messages are public and can be viewed
via the internet. Views expressed are those of the individual and
they are responsible for all message content.

ACB Web Site
http://www.acb.org.uk
List Archives
http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html
List Instructions (How to leave etc.)
http://www.jiscmail.ac.uk/