21 CFR § 862.1440 - Lactate dehydrogenase test system.

---
identifier: "/us/cfr/t21/s862.1440"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 862.1440 - Lactate dehydrogenase test system."
title_number: 21
title_name: "Food and Drugs"
section_number: "862.1440"
section_name: "Lactate dehydrogenase test system."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "H"
subchapter_name: "MEDICAL DEVICES"
part_number: "862"
part_name: "CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES"
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. 351, 360, 360c, 360e, 360j, 360 371."
regulatory_source: "52 FR 16122, May 1, 1987, unless otherwise noted."
cfr_part: "862"
---


# 862.1440 Lactate dehydrogenase test system.

(a) *Identification.* A lactate dehydrogenase test system is a device intended to measure the activity of the enzyme lactate dehydrogenase in serum. Lactate dehydrogenase measurements are used in the diagnosis and treatment of liver diseases such as acute viral hepatitis, cirrhosis, and metastatic carcinoma of the liver, cardiac diseases such as myocardial infarction, and tumors of the lung or kidneys.

(b) *Classification.* Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 862.9.

[52 FR 16122, May 1, 1987, as amended at 63 FR 59225, Nov. 3, 1998]