Victoria Police will stop using DNA evidence in court cases until next year.

Police Chief Commissioner Simon Overland says the DNA science is rock solid but how it is interpreted has to be reviewed.

Earlier this week a Melbourne student had his conviction for rape quashed when it was revealed a DNA sample was contaminated, but Commissioner Overland has stressed the problem with DNA analysis has nothing to do with that case.

He says new modelling needs to be developed.

"The science is absolutely rock solid. This is a mathematical issue," he said.

"We can only make sense of the science through the use of statistical models, that's always been the case."

"The science has outstripped the statistical model and we now need to work to develop a new model," he said.