The Oireachtas Health Committee has also held hearings on the controversy
Vicky Phelan has told the Public Accounts Committee she is not looking for revenge, but wants to ensure cases like hers never happen again.
Ms Phelan's case brought the Cervical Check scandal to national attention.
She has described in detail the gruelling medical treatment she has had to undergo for her cervical cancer.
She has also outlined how a 2011 smear test produced a false negative result.
Vicky Phelan says it is a disgrace that doctors knew she had been given a wrong diagnosis, but did not tell her until years later.
"It took a full two years for them to decide to communicate this to clinicians - so it was July 2016 before Cervical Check communicated my particular case to my gynaecologist.
"And then there was a whole 15 months of correspondence between the head of Cervical Check and my gynaecologist about who's responsibility it was to tell me".
Members of the PAC are also hearing from Stephen Teap, whose late wife Irene was one of the women where a cervical screening test produced a false negative result.
PAC chairman Sean Fleming said earlier the committee hopes to get a "fuller understanding of what didn’t happen at Cervical Check".
The Oireachtas Health Committee has also held hearings on the controversy.
They have again heard from officials from the Department of Health and representatives from the HSE and Cervical Check.
It was revealed on Tuesday that Dr Gabriel Scally - who is leading the scoping inquiry into the controversy - believes the Oireachtas hearings could impact his work.
He has warned he may have issues fulfilling his remit if many of the witnesses are constantly distracted appearing before different committees.
He raised concerns that the 'fevered atmosphere' around the situation may affect the investigation.
However, Deputy Fleming says the PAC wants answers for those affected - and says he believes they're going to help Dr Scally in his work.
He said: "What's happening in the Oireachtas over the last couple of weeks is bringing information into the public arena... it's making the HSE and the Department of Health check their files.
"I think it's important that the public have some assurance in the near-term as to where [things] stand on this issue.
He added: "Once we have a scoping inquiry, once we have a commission of investigation... you and I know that's three years down the road before we got a result from that."