Parents for Justice says it wants an investigation into hospitals' previous practice of selling human pituitary glands to drugs companies.
The campaign group wants the inquiry to look into payments from drugs firms to hospitals for supplying the gland from deceased children without the consent of families.
Today, the organisation published documents it has obtained under the Freedom of Information Act, detailing payments by two drugs companies to hospitals during the 1970s and 1980s.
The pituitary gland, which is located at the base of the brain, has been supplied to pharmaceutical firms KabiVitrum and Nordisk to produce human growth hormone.
The Health Service Executive says it expects the report of an independent audit of retained organs in over 30 hospitals to be produced this summer. The audit started in July 2007 and included site visits.
The HSE said it had adopted protocols that set out clearly the requirement to communicate with families at all stages of the post mortem examination process.
Charlotte Yeates of Parents for Justice said the documents released today show that 664 pituitary glands were supplied by hospitals in 1983 alone.
More details are also provided in relation to a number of hospitals.
They include Letterkenny General, Sligo General and in Dublin, the Temple Street Children's University Hospital, Our Lady's Children's Hospital, Crumlin and St Vincent's Hospital.
A letter from November 2000 shows that Temple Street Hospital asked its bank to establish if any accounts existed that might have been used to deposit payments from drugs companies.
The Dunne Inquiry (not completed and unpublished) and subsequently the Madden Inquiry (2005) into post mortem practice found that most hospitals engaged in supplying pituitary glands, but few had any documentation regarding the practice.
The inquiries also concluded there was no commercial motive on the part of doctors or hospitals, payments were modest and the motivation by all was to secure treatment for growth deficiency.
Parents for Justice says it is not asking for an expensive tribunal, only for the Government to deliver on a promised second stage of inquiry to deal with outstanding questions families have.
