Queensland patients are still being put at risk because they are getting abnormal test results late, or not at all.
A new report released on Tuesday shows there are enduring problems, three years after the health watchdog told medics to get their act together.
The Health Quality and Complaints Commission (HQCC) report says 60 per cent of complaints about the handling of test results involve a failure to review and follow up abnormal findings.
The complaints included a woman wrongly given the all-clear after a pap smear test.
In another case, a couple undergoing fertility treatment was not told that one of them carried a gene that could lead to health problems in any children they had.
The HQCC report reviewed data for the 15 months to September 30, 2012 - well after the watchdog issued a patient safety alert in 2010 about previous concerns over test results.
They included delays in people being told they had cancer and starting treatment.
The HQCC said healthcare providers and patients themselves needed to do more to improve the situation.
"There is still some work to be done," a HQCC spokeswoman said.
"Both practices and patients, there are things they could be doing."
The watchdog says public and private healthcare providers should have clear procedures in place for taking action on test results and communicating with patients.
It also said patients should not believe that "no news means good news", and contact their doctors if they don't get their results.
The latest HQCC review found there were 55 complaints and 22 notices of reportable events.
Of the combined 77 complaints, 46 were regarding a failure to act on abnormal test results.
Criticisms included delays in patients being told their results or the results being reviewed by a doctor.It said the highest risk was to patients receiving care across several hospital departments, outpatient clinics or GP practices.