Vitalograph Poster at ARTP Highlights VitaloLAB PFT Consistency

Vitalograph’s poster at the ARTP Conference in Belfast highlights that identical VitaloLAB PFT systems showed low inter- and intra-device variability, with key pulmonary function results meeting ERS/ATS guideline requirements. The findings support confidence that patient results remain consistent across multiple VitaloLAB systems in clinical services.

Vitalograph poster presented at ARTP Conference highlights consistency across VitaloLAB PFT systems.

Vitalograph presented new research at the ARTP Conference in Belfast in May 2026, with a poster by Tasmin Johnson, Global Lead comPAS Clinical Specialist, and colleagues examining inter- and intra-device variability across identical VitaloLAB® pulmonary function testing systems. The study was developed in response to growing demand for pulmonary function testing and the need for reliable, standardised results as services expand across hospital departments and community diagnostic centres.

The poster reported data from 19 healthy participants who completed three testing sessions on separate days using two identical Vitalograph VitaloLAB PFT systems. Testing included spirometry, diffusing capacity (TLCO), and lung volume measurements using multiple breath nitrogen washout, with analysis carried out using Bland–Altman methods in line with ERS/ATS standards.

The results showed complete datasets for all participants and low within-subject variability across repeated sessions. Mean bias between systems was small across all key parameters, including FEV₁ at 0.03L, FVC at 0.04L, TLCO at -0.50 mmol/min/kPa, KCO at -0.16 mmol/min/kPa/L, FRC at -0.07L, and TLC at -0.15L.

These findings indicate that identical VitaloLAB systems produced comparable results, with device-related variation remaining low relative to expected biological and within-test variation. The poster concluded that inter- and intra-device variability for key PFT parameters met ERS/ATS guideline requirements, supporting consistency of patient results across multiple VitaloLAB systems within clinical services.