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Thanks all for your responses. I know. The issue wouldn't even arise if we didn't have to do that 2nd antibody check for IVS purposes. I'm told it was introduced into the Trust after two practicing HCWs were found to have substituted another's blood for testing, knowing they were HBV +ve. 
Thanks again to all of you
Jo

Sent from my iPhone

On 13 Sep 2013, at 06:38, "Diane Romano-Woodward" <[log in to unmask]> wrote:


Hi Jo
I think the best answer to you question is... if they have produced evidence of immunity in the past, do not test them for antibodies again.(Green Book) 
Then you will not have the issue. It seems that the results do not have to be an IVS even if they are now doing exposure prone procedures. 
Do not spend money on unnecessary blood tests.
If there is uncertainty about their response to primary course, then the only time that a test is reliable  is one to four months after a dose of vaccine. You might want to get the option of giving this type of dose written into your PGD. otherwise you will need a patient Specific Direction for the individual, which may mean them coming back another time if you don't have a doctor on site.

If blood test is done outside of this time frame then a "low" results does not mean that they have not developed immunity in the past. 
A high result may just mean they have been exposed to the virus recently.. why else would the body produce the circulating antibodies months or years after vaccination?

Diane Romano-Woodward
RN  RSCPHN-OH  BSc   M Med Sc.(Occ Health)
Sunny Blue Sky Limited
Company Number  06865212








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