NSW Health is preparing to widen COVID-19 testing to all suburbs across the state for anyone with even the mildest symptoms, as the head of a major pathology lab predicts every Sydneysider will inevitably be tested before the pandemic abates.

Chief Health Officer Dr Kerry Chant will meet with private pathology providers on Wednesday to confirm the state has the capacity to deliver a major testing blitz.

Ruby Princess cruise ship passenger Michael receives his second COVID-19 test at St Vincent's Hospital. Credit:Louise Kennerley

Testing has been restricted to hotspot suburbs where there have been indications of community transmissions.

"If we have enough testing kits and swabs and collection points, we will be announcing testing is open to anyone with symptoms who wants a COVID test," Dr Chant said.