Hi!
Not sure if I am writing in the correct forum.
We use a 'trans swab' for listeria environmental monitoring.
A colour change indicates listeria (species) but occasionally we have had a colour change and then swabs we send in to the external lab are negative.
One of our issues we have with the transwab is that the external lab can't and won't do an confirmation of the actual swab (trans swab) we take that has changed colour.
Is there someone in here that has a lot of experience with these trans swabs and how to handle a presumptive positive?
They are a really cheap alternative to external testing but...
Hope it is well worded enough, otherwise let me know!
Also let me know if GFSI auditors tend to accept trans swab as an acceptable method.
Thanks
Edited by AJL, 16 July 2024 - 08:12 PM.