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Expert in Spirometry

Software for interpreting lung function test results

The following software for interpreting spirometry is available:


The analytical technique used for deriving the Stanojevic 'all-age' equations was applied by the Global Lung Function Initiative to >70,000 healthy nonsmoking individuals from various parts of the world. This gave rise to continuous equations for the 3-95 year age range for different ethnic groups. Predeicted values are available for FEV1, VC, FEV1/VC, FEV0.75, FEV0.75/VC, FEF25-75%, FEF75%. The Quanjer GLI-2012 equations were endorsed by the major respiratory societies: European Respiratory Society, American Thoracic Society, Australian and New Zealand Society of Respiratory Science, Asian Pacific Society for Respirology, Thoracic Society of Australia and New Zealand, and the American College of Chest Physicians. They are state of the art all-age multi-ethnic reference values and therefore the reference values of choice. The software runs on a Windows platform. Download software.

GLI-2012 data conversion software

This software for PC uses the Quanjer GLI-2012 prediction equations for spirometry. People who wish to convert their primary database (FEV1, VC, FEV1/VC, FEV0.75, FEV0.75/VC, FEF25-75%, FEF75%) into one with predicted values, lower limit of normal, z-scores and percentile for each observation, can do so using the GLI2012_DataConversion software, made available by the Global Lung Function Initiative. The software can handle up to 60,000 records. There is also a version available that uses an Excel macro. Download software.

Interpreting spirometric data

How well do predicted values for children and adolescents connect to those for adults? The set that you are using, or plan to be using, how does it compare to other predicted values? How to handle different ethnic groups? You will find the answers in this software, which displays predicted values and their LLN of 68 authors, and in the very extensive documentation that accompanies it. The software runs on a Windows platform. Download software


The LungXplorer software is designed to familiarize oneself with real data collected in a normal population. It includes some 14,500 longitudinal spirometric measurements (FEV1, FVC) in about 4,500 adults (18-80+ yr). Data were collected at 3 year intervals for up to 12 years. In addition about 6,200 longitudinal measurements (FEV1, FVC) in about 750 adolescent schoolchildren, who were about 11-12 years old at the start of the study. Data were collected at half year intervals for up to 7 years. Spirometric data are complemented with respiratory symptoms and smoking habits. You can explore the data cross-sesctionally as well as longitudinally. The software runs on a Windows platform. Download software


This software is designed to allow you to explore and familiarize with real clinical data. The database comprises about 12,000 records of spirometric measurements obtained in adults and in some children/adolsecents. Measurements were usually performed pre en post bronchodilator in clinical and outpatients. In the majority of cases tests were repeated after bronchodilatation. The software is multilingual (English, Dutch, German, French, Italian, Spanish, Polish and Russian). Interpretation is based on ECSC/ERS predicted values. The software runs on a Windows platform. Download software

Arm span

The software is designed to convert arm span into height (with upper and lower limitis) for children and adults from China, Europe, Ghana, India, Iran and Turkey. Download software

See also: Quanjer PH, Capderou A, Mazicioglu MM, Aggarwal AN, Banik SD, Popovic S, Tayie FA, Golshan M, Ip MS, Zelter M. All-age relationship between arm span and height in different ethnic groups. Eur Respir J. 2014; 44: 905-912. PubMed

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