Browse hierarchy: [Clinical Toxicology (TX)](/submissions/TX) → [Subpart D — Clinical Toxicology Test Systems](/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems) → [21 CFR 862.3910](/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/862.3910) → LFI — High Pressure Liquid Chromatography, Tricyclic Antidepressant Drugs

# LFI · High Pressure Liquid Chromatography, Tricyclic Antidepressant Drugs

_Clinical Toxicology · 21 CFR 862.3910 · Class 2_

**Canonical URL:** https://fda.innolitics.com/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/LFI

## Overview

- **Product Code:** LFI
- **Device Name:** High Pressure Liquid Chromatography, Tricyclic Antidepressant Drugs
- **Regulation:** [21 CFR 862.3910](/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/862.3910)
- **Device Class:** 2
- **Review Panel:** [Clinical Toxicology](/submissions/TX)
- **3rd-party reviewable:** yes

## Identification

A tricyclic antidepressant drugs test system is a device intended to measure any of the tricyclic antidepressant drugs in serum. The tricyclic antidepressant drugs include imipramine, desipramine, amitriptyline, nortriptyline, protriptyline, and doxepin. Measurements obtained by this device are used in the diagnosis and treatment of chronic depression to ensure appropriate therapy.

## Classification Rationale

Class II (special controls). A tricyclic antidepressant drugs test system is not exempt if it is intended for any use other than employment or insurance testing or is intended for Federal drug testing programs. The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 862.9, provided the test system is intended for employment and insurance testing and includes a statement in the labeling that the device is intended solely for use in employment and insurance testing, and does not include devices intended for Federal drug testing programs (e.g., programs run by the Substance Abuse and Mental Health Services Administration (SAMHSA), the Department of Transportation (DOT), and the U.S. military).

## Special Controls

*Classification.* Class II (special controls). A tricyclic antidepressant drugs test system is not exempt if it is intended for any use other than employment or insurance testing or is intended for Federal drug testing programs. The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 862.9, provided the test system is intended for employment and insurance testing and includes a statement in the labeling that the device is intended solely for use in employment and insurance testing, and does not include devices intended for Federal drug testing programs (*e.g.,* programs run by the Substance Abuse and Mental Health Services Administration (SAMHSA), the Department of Transportation (DOT), and the U.S. military).

## Recent Cleared Devices (4 of 4)

| Record | Device Name | Applicant | Decision Date | Decision |
| --- | --- | --- | --- | --- |
| [K941994](https://fda.innolitics.com/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/LFI/K941994.md) | BENZODIAZEPINES AND TRICYCLIC ANTIDEPRESSANTS BY HPLC | Bio-Rad | Mar 20, 1995 | SESE |
| [K941990](https://fda.innolitics.com/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/LFI/K941990.md) | BENOZODIAZEPINES AND TRICYLIC ANTIDEPRESSANTS BY HPLC | Bio-Rad | Mar 20, 1995 | SESE |
| [K934340](https://fda.innolitics.com/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/LFI/K934340.md) | BIOSITE DIAGNOSTICS - TRIAGE PANEL FOR DRUGS OF ABUSE PLUS TRICYCLIC ANTIDEPRESSANTS | Biosite Incorporated | Dec 2, 1994 | SESE |
| [K802245](https://fda.innolitics.com/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/LFI/K802245.md) | 7 TRICYCLIC ANTIDE PRESSANTS | Technicon Instruments Corp. | Oct 10, 1980 | SESE |

## Top Applicants

- Bio-Rad — 2 clearances
- Biosite Incorporated — 1 clearance
- Technicon Instruments Corp. — 1 clearance

---

**Source:** [https://fda.innolitics.com/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/LFI](https://fda.innolitics.com/submissions/TX/subpart-d%E2%80%94clinical-toxicology-test-systems/LFI)

**Published by [Innolitics](https://innolitics.com)** — a medical-device software consultancy. We help companies design, build, and clear FDA-regulated software and AI/ML devices. If you're preparing [a 510(k)](https://innolitics.com/services/510ks/), [a De Novo](https://innolitics.com/services/regulatory/), [a SaMD](https://innolitics.com/services/end-to-end-samd/), [an AI/ML medical device](https://innolitics.com/services/medical-imaging-ai-development/), or [an FDA regulatory strategy](https://innolitics.com/services/regulatory/), [get in touch](https://innolitics.com/contact).

**Cite:** Innolitics at https://innolitics.com