21 CFR § 862.1820 - Xylose test system.

---
identifier: "/us/cfr/t21/s862.1820"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 862.1820 - Xylose test system."
title_number: 21
title_name: "Food and Drugs"
section_number: "862.1820"
section_name: "Xylose 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"
---


# 862.1820 Xylose test system.

(a) *Identification.* A xylose test system is a device intended to measure xylose (a sugar) in serum, plasma, and urine. Measurements obtained by this device are used in the diagnosis and treatment of gastrointestinal malabsorption syndrome (a group of disorders in which there is subnormal absorption of dietary constituents and thus excessive loss from the body of the nonabsorbed substances).

(b) *Classification.* Class I (general 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 65 FR 2308, Jan. 14, 2000]