FDA Reverts Lab Test Reg. After Court Ruling
FDA has issued a final rule rolling back a 2024 regulation that expanded the agency’s authority over laboratory-developed tests (LDTs), following a federal court decision that struck down the earlier policy. The move restores the regulatory definition of “in vitro diagnostic products” to its pre-2024 language, removing a clause that explicitly included products manufactured by laboratories. That change, finalized in May 2024, was intended to clarify that FDA oversight extended to LDTs, a long-disputed area in clinical testing regulation.
The 2024 final rule regulating LDTs was vacated by Eastern Texas federal judge Sean Jordan, who ruled 3/31 in favor of plaintiffs American Clinical Laboratory Association and Association for Molecular Pathology, agreeing that the rule is in “excess of [FDA’s] statutory jurisdiction, authority, or limitations” and is “arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law.”
FDA had maintained that the final rule was well within its authority under the Food Drug and Cosmetic Act (FDCA) and did not otherwise violate the Administrative Procedure Act. “In sum, Congress has considered but declined to enact several bills over the past two decades that would have reshaped the regulatory framework over laboratory-developed test services,” Jordan ruled. “Under the circumstances, agencies cannot circumvent, and courts must enforce, the statutory framework Congress enacted as it exists under the FDCA and CLIA [Clinical Laboratory Improvement Amendments].”
The court remanded the issue back to the Department of Health and Human Services for further review. In response, FDA says its latest final rule “reflects the court’s order vacating the rule” and formally deletes the laboratory-specific language from its regulations.
The legal battle over LDT oversight has been closely watched by the diagnostics industry, public health advocates, and lawmakers. Proponents of FDA regulation argue that agency oversight is necessary to ensure test accuracy and protect patients, while opponents — including many clinical laboratories — contend that FDA involvement is burdensome and unnecessary, given existing regulation under the Centers for Medicare and Medicaid Services.