21 CFR 58.113 - Mixtures of articles with carriers.

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§ 58.113 Mixtures of articles with carriers.

(a) For each test or control article that is mixed with a carrier, tests by appropriate analytical methods shall be conducted:

(1) To determine the uniformity of the mixture and to determine, periodically, the concentration of the test or control article in the mixture.

(2) To determine the stability of the test and control articles in the mixture as required by the conditions of the study either:

(i) Before study initiation, or

(ii) Concomitantly according to written standard operating procedures which provide for periodic analysis of the test and control articles in the mixture.

(b) [Reserved]

(c) Where any of the components of the test or control article carrier mixture has an expiration date, that date shall be clearly shown on the container. If more than one component has an expiration date, the earliest date shall be shown.

[ 43 FR 60013, Dec. 22, 1978, as amended at 45 FR 24865, Apr. 11, 1980; 52 FR 33781, Sept. 4, 1987]

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

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United States Code

Title 21 published on 19-May-2018 03:57

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 21 CFR Part 58 after this date.

  • 2016-10-31; vol. 81 # 210 - Monday, October 31, 2016
    1. 81 FR 75351 - Good Laboratory Practice for Nonclinical Laboratory Studies; Extension of Comment Period
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Proposed rule; extension of comment period.
      FDA is extending the comment period on the proposed rule published August 24, 2016 (81 FR 58342). Submit either electronic or written comments by January 21, 2017.
      21 CFR Parts 16 and 58