---
kind: "section"
citation: "42 C.F.R. § 493.1265"
title: "42"
number: "493.1265"
heading: "Standard: Virology."
url: "https://uscodex.org/cfr/42/493.1265"
---

# §493.1265. Standard: Virology.

- (a) When using cell culture to isolate or identify viruses, the laboratory must simultaneously incubate a cell substrate control or uninoculated cells as a negative control material.
- (b) The laboratory must document all control procedures performed, as specified in this section.

## Notes

### Source

Source: 68 FR 3703, Jan. 24, 2003, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 263a, 1302, 1395x(e), 1395x(s)(3) and (s)(17).

### Source

Source: 55 FR 9576, Mar. 14, 1990, unless otherwise noted.