---
kind: "section"
citation: "42 C.F.R. § 7.3"
title: "42"
number: "7.3"
heading: "Definitions."
url: "https://uscodex.org/cfr/42/7.3"
---

# §7.3. Definitions.


Biological standards means a uniform and stable reference biological substance which allows measurements of relative potency to be made and described in a common currency of international and national units of activity.

Biological preparations means a reference biological substance which may be used for a purpose similar to that of a standard, but which has been established without a full collaborative study, or where a collaborative study has shown that it is not appropriate to establish the preparation as an international standard.


## Notes

### Authority

Authority: Sec. 215, 58 Stat. 690, as amended (42 U.S.C. 216); title V of the Independent Offices Appropriations Act of 1952 (31 U.S.C. 9701); and secs. 301(a) and 352 of the Public Health Service Act, as amended (42 U.S.C. 241(a) and 263).

### Source

Source: 52 FR 11073, Apr. 7, 1987, unless otherwise noted.