{"data":{"id":"us/21-cfr-866.3550","jurisdiction":"us","citation":"21 CFR 866.3550","heading":"Salmonella spp. serological reagents.","body":"(a) Identification. Salmonella spp. serological reagents are devices that consist of antigens and antisera used in serological tests to identify Salmonella spp. from cultured isolates derived from clinical specimens. Additionally, some of these reagents consist of antisera conjugated with a fluorescent dye (immunofluorescent reagents) used to identify Salmonella spp. directly from clinical specimens or cultured isolates derived from clinical specimens. The identification aids in the diagnosis of salmonellosis caused by bacteria belonging to the genus Salmonella and provides epidemiological information on this disease. Salmonellosis is characterized by high grade fever (“enteric fever”), severe diarrhea, and cramps.\n(b) Classification. Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 866.9.","path":["Title 21—Food and Drugs","CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES","SUBCHAPTER H—MEDICAL DEVICES","PART 866—IMMUNOLOGY AND MICROBIOLOGY DEVICES","Subpart D—Serological Reagents"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-21.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:47Z","sha256":"87f2b4726876120f8a2612d75126bd2f779c8b26fe0db3db58e3dc6e6aafccff","source_id":"us-cfr","stale":true,"prev":"us/21-cfr-866.3520","next":"us/21-cfr-866.3600"},"notice":"GroundRules: Original legal text. Not legal advice."}