http://www.daff.gov.au/aqis/cat-dogs.../info-pack-4#1
According to their web site, it does not say that they don't accept the test results from Malaysia and insist on using a UK lab or a specific lab.
The test for the Nipah virus needs to be done at a specific Australian lab for sure.
I will contact to ask them about this issue. Right now, my pets need to get the rabies jab first and wait at least 4 weeks before taking the RNATT test.