Neither the Queensland government nor its opposition will have representatives at the Splendour in the Grass festival this weekend to get a first-hand look at the logistics of pill testing.

Emergency doctor David Caldicott will conduct a legal substance-testing demonstration at the three-day festival near Byron Bay for the New South Wales coroner investigating six festival deaths, including that of 22-year-old Brisbane man Joshua Tam.

Punters at this year's Splendour in the Grass music festival. Credit:Regi Varghese

Health Minister Steven Miles would not say whether he would take up Dr Caldicott's invitation to conduct a similar trial in Queensland.

He said the government would instead be "looking closely at the work currently underway in Canberra in relation to the use of pill testing as a harm reduction strategy".