Bioethics Blogs

F.D.A. Attention to Inaccurate Lab Tests Defers Hopes of

Generally the stock of research hospitals, laboratory developed tests (LDTs) were traditionally considered relatively benign and straightforward, tending not to require premarket review in the U.S. by the F.D.A. However, with the advent of genetic testing and private biotech company research, LDTs are now being used to diagnose common and serious diseases such as heart disease and cancer—highlighting the need for regulatory oversight to manage the diagnostic consequences of unvalidated testing. Over the last year, the F.D.A has been working towards new guidance of LDTs while seeking comments from the public. On November 16, the administration released a report of 20 case studies depicting the negative public health impact caused by LDTs that don’t perform as promised.

Robert Pear covered the issue for The New York Times, remarking that “Inaccurate and unreliable medical tests are prompting abortions, promoting unnecessary surgeries, putting tens of thousands of people on unneeded drugs and raising medical costs.” These are non-trivial findings. Beyond the personal harm caused by these mistakes, the costs are impressive. For example, an inaccurate genetic biomarker test for autism that was given to 2,027 children had an estimated social cost of $66.1 million, far outweighing the profits provided to the company.

In addition to these immediate individual and social harms, there is also a looming existential threat to the healthcare and research communities. These tests are in the limelight largely because they form the backbone of “precision medicine,” an effort to which the current Administration is now committed. The promise of precision medicine rests in knowledge: if we can test and sequence and analyze, then we will know; and if we know, then we may be able to conquer.

The views, opinions and positions expressed by these authors and blogs are theirs and do not necessarily represent that of the Bioethics Research Library and Kennedy Institute of Ethics or Georgetown University.