Hepatitis A Testing Requirements for Food Manufacturers

When Hepatitis A Testing Is Mandated

The FDA requires Hepatitis A testing under specific circumstances: when an employee or contractor develops Hepatitis A and has worked in food-contact areas, when a supplier notifies a manufacturer of Hepatitis A contamination in raw ingredients, or when traceability investigations point to a potential contamination source. The FSIS (Food Safety and Inspection Service) applies similar requirements for meat and poultry facilities. Testing is also mandated for imported produce and shellfish from certain regions with higher Hepatitis A prevalence. Manufacturers must test products, environmental surfaces, and water systems within 24 hours of suspected contamination to initiate rapid response protocols.

Approved Laboratory Methods and Standards

The FDA recognizes RT-PCR (reverse transcription polymerase chain reaction) as the gold standard for detecting Hepatitis A virus in food and environmental samples. Laboratories must be certified under CLIA (Clinical Laboratory Improvement Amendments) or hold equivalent accreditation from organizations like A2LA or AIHA. EPA Method 1615 and variants are used for Hepatitis A detection in water systems. Manufacturers should contract with laboratories that maintain ISO 17025 accreditation and participate in proficiency testing programs to ensure detection sensitivity meets FDA expectations (typically <1 copy per test). Results must be documented and retained for at least two years per FDA records requirements.

Regulatory Consequences and Operational Response

Positive Hepatitis A findings trigger immediate FDA notification requirements and Class I recall classification—the most severe category indicating potential serious health hazards. The manufacturer must cease production, quarantine affected products, and notify distributors and consumers within 24 hours. Facilities typically undergo mandatory deep cleaning, sanitation verification, and employee health screening before resuming operations. The FDA may issue a Warning Letter, conduct unannounced inspections, or escalate to criminal prosecution if negligence is documented. State and local health departments are notified simultaneously, and the facility may remain operational under FDA consent decree until remediation is verified through environmental sampling and negative test results on consecutive batches.

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