QuantaFlo HD Clinical Validation Study

ClinicalTrials.gov ID: NCT07219693

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ClinicalTrials.gov public records Last synced Nov 15, 2026, 1:16 PM EST

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Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The primary aim of this validation protocol is to assess cardiovascular function through transthoracic echocardiography ("Echo") measurements and the QuantaFlo HD test measuring blood flow at the finger during a forced expiration ("FE"). The study examines whether Echo-measured GLS values greater than -16% correlate with abnormal responses during FE as measured by QuantaFlo HD.

Study identification

NCT ID: NCT07219693
Recruitment status: Recruiting
Study type: Observational
Phase: Not listed
Lead sponsor: Semler Scientific; Industry
Enrollment: 600 participants

Conditions and interventions

Conditions

To Assess Cardiovascular Function

Interventions

QuantaFlo HD Device

Device

Eligibility (public fields only)

Age range: 22 Years and older
Sex: All
Healthy volunteers: Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date: Aug 21, 2025 (Actual)
Primary completion: Mar 31, 2026 (Estimated)
Completion: Jun 30, 2026 (Estimated)
Last update posted: Oct 23, 2025

2025 – 2026

United States locations

U.S. sites: 1
U.S. states: 1
U.S. cities: 1

Facility	City	State	ZIP	Site status
Pima Heart and Vascular	Tucson	Arizona	85741	Recruiting

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows: Public field values for ClinicalTrials.gov record NCT07219693, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do: No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from: Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh: Last update posted Oct 23, 2025 · Synced Nov 15, 2026