Pulmonary Function Test
Health Checkups
estimated about CNY 200-500
(estimated about USD 30-70)
30 min
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Description
A pulmonary function test measures how well your lungs work—often needed for asthma, COPD, or pre-surgery evaluation—in China, with costs typically ranging ¥200–¥500 and booking support available through ChinaMedicalHub.
Main Uses
Pulmonary function tests are primarily used for: 1. Diagnosing lung diseases such as asthma, COPD, and restrictive lung diseases, 2. Monitoring the progression of lung conditions over time, 3. Assessing the effectiveness of treatment plans, 4. Evaluating the impact of occupational exposures on lung health, 5. Preoperative assessment for patients undergoing surgery, especially those involving the chest or upper abdomen.
Normal Range
For Pulmonary Function Tests (PFTs), common indicators and their normal value ranges include: Forced Vital Capacity (FVC) - typically 80-120% of the predicted value, Forced Expiratory Volume in 1 second (FEV1) - usually 80-120% of the predicted value, FEV1/FVC ratio - generally above 70-75%, Peak Expiratory Flow (PEF) - around 80-120% of the predicted value, and Total Lung Capacity (TLC) - approximately 80-120% of the predicted value. These values can vary based on age, sex, height, and ethnicity.
Low Values - Possible Causes
Low values in PFTs may be caused by: 1. Chronic obstructive pulmonary disease (COPD), 2. Asthma, 3. Pulmonary fibrosis, 4. Cystic fibrosis, 5. Severe obesity or deconditioning.
High Values - Possible Causes
High values in PFTs are less common but can occur due to: 1. Overinflation of the lungs as seen in emphysema, 2. Athletes or individuals with high physical fitness levels, 3. Younger age, 4. Tall stature, 5. Incorrect testing technique or equipment calibration.
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