42 CFR § 493.25 - Laboratories performing tests of high complexity.

---
identifier: "/us/cfr/t42/s493.25"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 493.25 - Laboratories performing tests of high complexity."
title_number: 42
title_name: "Public Health"
section_number: "493.25"
section_name: "Laboratories performing tests of high complexity."
chapter_name: "CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "G"
subchapter_name: "STANDARDS AND CERTIFICATION"
part_number: "493"
part_name: "LABORATORY REQUIREMENTS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 263a, 1302, 1395x(e), 1395x(s)(3) and (s)(17)."
regulatory_source: "55 FR 9576, Mar. 14, 1990, unless otherwise noted."
cfr_part: "493"
---


# 493.25 Laboratories performing tests of high complexity.

(a) A laboratory must obtain a certificate for tests of high complexity if it performs one or more tests that meet the criteria for tests of high complexity as specified in § 493.17(a).

(b) A laboratory performing one or more tests of high complexity must meet the applicable requirements of subpart C or subpart D, and subparts F, H, J, K, M, and Q of this part.

(c) If the laboratory also performs tests of moderate complexity, the applicable requirements of subparts H, J, K, M, and Q of this part must be met. Under a registration certificate or certificate of compliance, PPM procedures must meet the inspection requirements at §§ 493.1773 and 493.1777.

(d) If the laboratory also performs waived tests, compliance with §§ 493.801(a) and 493.801(b)(7) and subparts J, K, and M of this part are not applicable to the waived tests. However, the laboratory must comply with the requirements in §§ 493.15(e), 493.801(b)(1) through (6), 493.1771, 493.1773, and 493.1775.

[57 FR 7139, Feb. 28, 1992, as amended at 60 FR 20044, Apr. 24, 1995; 68 FR 3702, Jan. 24, 2003; 68 FR 50723, Aug. 22, 2003; 87 FR 41232, July 11, 2022]