Meat Testing
Virus Testing for Meat, Poultry and Shellfish in Mexico
Virus testing uses PCR to detect foodborne viruses such as hepatitis A, hepatitis E and norovirus, while animal viruses such as avian influenza and swine fevers are handled by SENASICA's official diagnostic system.
Foodborne viruses
Viruses do not multiply in meat but can survive in it. Hepatitis E virus is associated with undercooked pork and pork liver; norovirus and hepatitis A are mostly linked to shellfish (oysters, clams) and to food contaminated by infected handlers. Detection requires RT-PCR because these viruses cannot be grown in routine culture.
The Quintana Roo state lab publishes an RT-PCR test for hepatitis A in foods (CCAYAC methods) at MXN 3,500, with an 8-business-day PCR turnaround. Norovirus and hepatitis E in food are offered by few labs in Mexico; ask CCAYAC-network or university labs for availability.
- Hepatitis A: shellfish, produce and food handled by infected workers
- Norovirus GI/GII: shellfish and ready-to-eat foods
- Hepatitis E: pork liver and undercooked pork
Animal viruses: avian influenza and swine fevers
Avian influenza (NOM-044-ZOO-1995) and classical swine fever (NOM-037-ZOO-1995) have national campaigns; Mexico was declared free of classical swine fever in 2012. African swine fever has never been confirmed in Mexico; suspected cases of exotic diseases must be reported to SENASICA, and diagnosis is done in official labs, including the biosafety level 3 facilities of the Mexico-United States Commission for the Prevention of Foot-and-Mouth Disease and Other Exotic Animal Diseases (CPA). SENASICA also publishes a list of labs authorized to diagnose avian influenza.
These diseases do not represent a food-safety risk in properly inspected meat, but producers who see sudden deaths in pigs or birds must notify SENASICA immediately rather than send samples to a private lab.
Sampling and shipping
For food virology, send 100-250 g (or 1 kg of shellfish in the shell) chilled or frozen in a sealed sterile container; PCR targets are stable frozen. For sick animals, do not ship carcasses yourself: call SENASICA or your state animal health office, which collects samples under biosecurity.
Common tests & typical costs
| Test | Method | Cost (MXN) | Turnaround |
|---|---|---|---|
| Hepatitis A virus in food (RT-PCR) Shellfish and ready-to-eat foods. | Real-time duplex RT-PCR (CCAYAC-M-346) | $3,500–$3,500 | 8 days |
| Norovirus GI/GII in food (RT-PCR) Leading cause of shellfish-related outbreaks. | Real-time RT-PCR (ISO 15216) | $3,000–$6,000* | 5-10 days |
| Hepatitis E virus in pork or liver (RT-PCR) Zoonotic virus in pigs; risk in undercooked liver. | Real-time RT-PCR | $2,500–$6,000* | 7-15 days |
| Avian influenza (RT-PCR, authorized labs) Flock surveillance and movement requirements. | Real-time RT-PCR / serology (ELISA, AGID) | $500–$2,500* | 2-7 days |
| African / classical swine fever (official diagnosis only) Report suspected cases to SENASICA; diagnosis at official labs such as the CPA BSL-3 lab. No private testing. | Real-time PCR, virus isolation, ELISA | Official labs only (SENASICA) | 1-3 days |
* Estimated range. Always request a written quote from the lab.
Mexican regulations
- NOM-242-SSA1-2009: Fishery products (incl. molluscan shellfish): sanitary specifications and test methods
- NOM-044-ZOO-1995: National campaign against avian influenza
- NOM-037-ZOO-1995: National campaign against classical swine fever
Where to get it tested
Runs TIF inspection, the national toxic-residue monitoring program, animal-disease campaigns and the clenbuterol-free Reliable Supplier program. Its directory of official, approved and authorized labs tells you where program samples can go.
National; state offices in Yucatán and Quintana Roo · Federal authority
National reference lab for animal-disease diagnosis and verification of veterinary biologicals.
Mexico (national reference) · SENASICA official laboratory
Binational commission with high-biosafety labs that diagnose exotic diseases such as foot-and-mouth disease and African swine fever. Contact only through SENASICA when an exotic disease is suspected.
Mexico (BSL-3 facility) · SENASICA official laboratory
COFEPRIS's national reference lab; it sets the CCAYAC methods and authorizes third-party labs (terceros autorizados). Use its list to find authorized labs whose results COFEPRIS accepts.
Mexico City (national reference) · Federal reference laboratory
Accepts private clients; publishes a service catalog (rev. 6, Nov 2025) with prices: Salmonella MXN 408, Listeria 633, molds/yeasts 229, histamine 3,031, hepatitis A RT-PCR 3,500, Gnathostoma 220. Samples Mon-Fri 8:30-13:30; quotes by email (lespqroo@hotmail.com). Turnaround: 10 business days microbiology, 8 PCR, 25 toxicology.
Av. Maxuxac s/n con Calle Miguel Alemán, Fracc. Residencial Chetumal, C.P. 77039, Chetumal, Quintana Roo · COFEPRIS third-party authorized lab; quality system under NMX-EC-17025-IMNC-2018
Frequently Asked Questions
Can I get my pork tested for African swine fever?
Testing for exotic diseases is reserved for SENASICA's official system. If you suspect it, report it; do not send samples to private labs.
Is hepatitis E a concern in Mexican pork?
Hepatitis E circulates in pigs worldwide. Cooking pork and liver thoroughly is the main protection; RT-PCR testing is available on request at specialized labs.
How long does food PCR take?
The Quintana Roo state lab lists 8 business days for PCR analyses; private labs can be faster for urgent cases.