Respiratory Proton Transfer Rate in Exhaled Breath Condensate (Proton Transfer Rate in Breath Condensate)
This test measures the rate at which protons (hydrogen ions) move in the tiny droplets of moisture found in exhaled breath. It may help assess lung function and inflammation in certain respiratory conditions.
["This test evaluates proton transfer in exhaled breath condensate, potentially indicating lung health and inflammation."]
Key facts at a glance
- LOINC
- 96324-9
- Short code
- K pneumo grp L resp NAA+non-prb-NCncRng
- Synonyms
- K pneumo grp L resp NAA+non-prb-NCncRng
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- non-probe-amp-tar
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test captures the chemical activity in exhaled breath condensate, specifically tracking how protons transfer. This reflects the chemical environment in the lungs, which can be influenced by conditions like chronic obstructive pulmonary disease (COPD) or other respiratory issues.
Why It Might Be Ordered
Your healthcare provider may order this test if you have symptoms like persistent cough, shortness of breath, or if they suspect lung inflammation or damage. It can also be used in research or specialized clinical settings to study lung function in detail.
How the Test Works
You will exhale into a special device that collects the breath condensate. The collected sample is then analyzed to measure the proton transfer rate, which is compared to expected values for your age and health status.
Preparation for the Test
No special preparation is typically needed. You may be asked to avoid certain medications or activities for a short time before the test, depending on your specific situation. Follow any instructions your healthcare provider gives you.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test can provide insights into lung inflammation, oxidative stress, and other biochemical processes in the airways. It may help diagnose or monitor conditions like COPD, cystic fibrosis, or other respiratory diseases by offering a non-invasive way to assess lung health beyond traditional spirometry.
Short name
None
Frequently asked questions
What does a high or low proton transfer rate mean?
How long does it take to get results?
Is this test painful or uncomfortable?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy