---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-23-005331"
form_type: "8-K"
ticker: "LUCD"
cik: "0001799011"
company_name: "Lucid Diagnostics Inc."
filed_at: "2023-02-16T23:59:59+00:00"
generated_at: "2026-06-19T09:40:58.891403+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Lucid Diagnostics tests 391 San Antonio firefighters for esophageal precancer in first #CheckYourFoodTube event

## Summary
- Completed first #CheckYourFoodTube event with San Antonio Fire Department over two weekends in January 2023.
- 391 at-risk firefighters underwent EsoCheck cell collection and EsoGuard DNA testing; samples sent to LucidDx Labs.
- Positive results identified in some firefighters under age 40, who will undergo monitoring to prevent cancer progression.
- Event demonstrates capacity: nurse practitioners performed up to 50 EsoCheck procedures per day; lab handled 200+ samples daily.
- Lucid plans to expand satellite Lucid Test Centers to other public service departments, unions, and employers.

## SEC filing metadata
- accession: 0001493152-23-005331
- form_type: 8-K
- ticker: LUCD
- cik: 0001799011
- company_name: Lucid Diagnostics Inc.
- filed_at: 2023-02-16T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1799011/000149315223005331/0001493152-23-005331-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1799011/000149315223005331/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-23-005331
- JSON: https://secwatch.observer/filing/0001493152-23-005331.json
- Plain text: https://secwatch.observer/filing/0001493152-23-005331.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.