Synlait Milk's Talbot Forest Cheese opted to act fast and implement a precautionary recall of more than two dozen products even though the presence of listeria had not been confirmed.
Synlait bought the Temuka-based company for $37.8 million in August last year.
On Friday, the Ministry for Primary Industries said it had received unconfirmed test results indicating the presence of listeria in one of the products processed at the Talbot Forest Cheese factory in Temuka.
Today it said the test was still unconfirmed and did not indicate when the result would be known.
However, MPI recalled a range of cheese products because of potential contamination, across a number of Goodman Fielder, Gibbston Valley and Pams brands and specific dates of Speirs Foods and Pams convenience salads, which include feta cheeses.