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Breath Analysis & Malnutrition

Breath Ammonia as a Malnutrition Screening Tool

Who can join

Ages 18 to 95 · All sexes · Healthy volunteers welcome

Inclusion Criteria:

1. Age: 18-95 years
2. Malnutrition group (Cross-sectional study only); not involved in intervention: Diagnosed with malnutrition (verified in medical history)

Exclusion Criteria:

1. Chronic kidney, liver or pulmonary disease
2. Anabolic steroid use other than testosterone (e.g., oxandrolone)
3. Patients judged unsuitable for enrollment by the study medical investigator
4. Pregnant women or women who are nursing
5. Unable or unwilling to consume study beverages or fast for 24 hours each arm

About the study

The purpose of this research study is to understand how breath is related to nutritional status. The procedures involved in this study include blood and breath sampling, questionnaires about health history, medications, nutritional status and diet, and a physical examination. Breath markers will be compared between individuals with and without malnutrition and be compared to indicators of malnutrition. Some individuals will undergo an interventional study involving 2 days of consuming study beverages and fasting along with providing additional breath samples to see if the breath changes in response to short-term changes in nutritional status.

What is being tested

• Feeding (other)
• Fasting (other)

Sponsor: Pennington Biomedical Research Center · Participants: 12 · Started: Aug 17, 2023

Contact the study team

• Jacob T Mey, PhD, RD · Phone: 225-763-2644

Official record on ClinicalTrials.gov — NCT06115148

Locations in the U.S.

Conditions

• Malnutrition

From ClinicalTrials.gov, data retrieved Sep 29, 2026. Each study sets its own eligibility; the study team decides who can join.