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Frequently Asked Questions: Premium Cattle Health Scheme

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Q: JOHNE'S: What is the difference between Johne’s PCR and Johne’s Culture?


We recommend Johne’s culture with PCR on the culture fluid as the gold standard test for Johne’s disease in faeces. This test takes approx 8-9 weeks to complete. We can use a direct PCR on faeces samples for Johne’s disease without the pre-culture step which provides results within 10 days. As faeces is a ‘dirty’ sample medium for PCR testing we recognise that more false negative results can occur by using this testing method compared to culture / PCR.

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