21 CFR § 118.7 - Sampling methodology for Salmonella Enteritidis (SE).

---
identifier: "/us/cfr/t21/s118.7"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 118.7 - Sampling methodology for Salmonella Enteritidis (SE)."
title_number: 21
title_name: "Food and Drugs"
section_number: "118.7"
section_name: "Sampling methodology for Salmonella Enteritidis (SE)."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "FOOD FOR HUMAN CONSUMPTION"
part_number: "118"
part_name: "PRODUCTION, STORAGE, AND TRANSPORTATION OF SHELL EGGS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321, 331-334, 342, 371, 381, 393; 42 U.S.C. 243, 264, 271."
regulatory_source: "74 FR 33095, July 9, 2009, unless otherwise noted."
cfr_part: "118"
---


# 118.7 Sampling methodology for Salmonella Enteritidis (SE).

(a) *Environmental sampling.* An environmental test must be done for each poultry house in accordance with § 118.5 (a) and (b). Within each poultry house, you must sample the environment using a sampling plan appropriate to the poultry house layout.

(b) *Egg sampling.* When you conduct an egg test required under § 118.6, you must collect and test the following number of eggs from the positive poultry house:

(1) To meet the egg testing requirements of § 118.6(c), you must collect and deliver for testing a minimum of 1,000 intact eggs representative of a day's production. The 1,000-egg sample must be tested according to § 118.8. You must collect and test four 1,000-egg samples at 2-week intervals for a total of 4,000 eggs.

(2) To meet the monthly egg testing requirement of § 118.6(e), you must collect and deliver for testing a minimum of 1,000 intact eggs representative of a day's production per month for the life of the flock. Eggs must be tested according to § 118.8.