21 CFR § 211.103 - Calculation of yield.

---
identifier: "/us/cfr/t21/s211.103"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 211.103 - Calculation of yield."
title_number: 21
title_name: "Food and Drugs"
section_number: "211.103"
section_name: "Calculation of yield."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "C"
subchapter_name: "DRUGS: GENERAL"
part_number: "211"
part_name: "CURRENT GOOD MANUFACTURING PRACTICE FOR FINISHED PHARMACEUTICALS"
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, 351, 352, 355, 360b, 360ddd, 360ddd-1, 371, 374; 42 U.S.C. 216, 262, 263a, 264."
regulatory_source: "43 FR 45077, Sept. 29, 1978, unless otherwise noted."
cfr_part: "211"
---


# 211.103 Calculation of yield.

Actual yields and percentages of theoretical yield shall be determined at the conclusion of each appropriate phase of manufacturing, processing, packaging, or holding of the drug product. Such calculations shall either be performed by one person and independently verified by a second person, or, if the yield is calculated by automated equipment under § 211.68, be independently verified by one person.

[73 FR 51932, Sept. 8, 2008]