"Your doctor will take a full history of your illness and, based on that, will be able to tell you whether you need Covid-19 testing, or whether you need other treatment.
"The teams can only test for Covid-19. The risk is that patients with other respiratory ailments, not related to Covid-19, will not get the right treatment if they do not phone their GP first," Caddie said.
The first Hawke's Bay CBAC is in full operation in Hastings, with further centres being set up in Napier, Flaxmere and Camberley.
Not following the GP referral system may risk patients not receiving treatment they need, according to Hawke's Bay DHB, while having too many people trying to access CBACs could result in overcrowding.
"Our general practice doctors have access to the latest information on the symptoms that mean someone requires testing. For your own health, you must phone you doctor's general practice and talk to them first," Caddie said.
Health leaders in Wairoa and Central Hawke's Bay are also advising the DHB on how their communities can be best catered for.
The DHB are urging patients to first phone their GP or the Healthline on 0800 358 5453.