Clinical trials: Challenge Test
Exercise Induced Bronchospasm
Hyperventilation Versus Exercise Testing Sensitivity in Exercise Induced Asthma
The diagnosis of exercise-induced bronchospasm (EIB) is difficult. The metacholine challenge test is not enough specific for the diagnosis of EIB.
- Trial name
- HYVES (NCT03063424)
- Testing
- Eucapnic voluntary hyperventilation, Exercise challenge on a cycle ergometer
- Where
- Canada
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Université de Sherbrooke
Food Hypersensitivity
Food Allergy Diagnostic Test Response to Previous Oral Challenge Response
The objective of this study is to compare the ocular response to CAC (using food allergen sensitive patients) to the systemic response of a previously performed oral food allergen challenge in the same subjects.
- Trial name
- NCT03693456
- Testing
- Conjunctival Allergen Challenge
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- ORA, Inc.
Diabetes, Gestational
DIAgnosing GDM usiNg Oral Sugar InStead
The purpose of this study is to compare the positive and negative effects of Dex4® tablets, as an alternative form of fast acting carbohydrate, compared to the current standard diagnostic test, glucose beverage.
- Trial name
- DIAGNOSIS (NCT05115188)
- Testing
- Dex4/ dextrose, Glucose beverage
- Where
- Canada
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Sunnybrook Health Sciences Centre
Financial Burden, Health Behavior
Economic Empowerment and Health Promotion of Uganda Grandmother-caregivers.
Background: There are an estimated 163 million children worldwide who are under the care of their grandparents or other relatives.
- Conditions
- Financial Burden, Health Behavior, Social Support
- Trial name
- BAJJAJJA (NCT07011264)
- Testing
- The BAJJAJJA intervention
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University of Utah
Influenza
Influenza Virus Challenge Study to Test Monoclonal Antibody TCN-032 as a Treatment for Influenza
The purpose of this study is to determine the safety and efficacy of TCN-032 given to healthy adult volunteers that have been inoculated with the influenza A virus
- Trial name
- NCT01719874
- Testing
- TCN-032
- Where
- United Kingdom
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Theraclone Sciences, Inc.
Healthy, Healthy Volunteer
Avocado and Postprandial Responses
The purpose of this study is to see how adding avocado to a breakfast meal affects blood sugar control and signals of hunger and fullness after eating.
- Conditions
- Healthy, Healthy Volunteer, Healthy Volunteers, Healthy Adult
- Trial name
- NCT06818032
- Testing
- Negative control, Avocado, Fat and fiber addition
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Vermont Medical Center
Asthma
Research on the Application of Electrical Impedance Tomography in Bronchial Challenge Testing
The purpose of this study was to examine whether electrical impedance tomography (EIT) was capable of identifying the deteriorated lung function on a regional level during bronchial challenge testing and whether EIT may provide…
- Trial name
- NCT06502405
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- wang kaifei
Allergy, Irritation
Cumulative Irritation Patch Test
A Cumulative Patch Test with a Challenge Phase is a test devised to ascertain if a chemical agent or agents have the potential to cause contact irritation or contact allergy in the skin.
- Conditions
- Allergy, Irritation, Sensitization
- Trial name
- NCT01842711
- Where
- United States
- Volunteers
- 224 people, healthy volunteers welcome
- Sponsor
- Chattem, Inc.
Individual Variability in (Poly)Phenol Metabolism, Cardiometabolic Health
Aggregate Metabolic Phenotypes for (Poly)Phenols: Development of an Oral (Poly)Phenol Challenge Test (OPCT)
The study is a single-dose acute clinical trial aiming at identifying aggregate metabolic phenotypes for the main dietary (poly)phenols and assessing the factors associated with their formation.
- Trial name
- OPCT (NCT05414084)
- Testing
- Oral (poly)phenol challenge test (OPCT)
- Where
- 2 sites in Italy
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- University of Parma
Chronic Kidney Diseases, Healthy
Identification of P-cresyl Sulfate Producer Phenotype by Oral Tyrosine Challenge Test: Interactions Among Diet, Gut Microbiota, and Host Genome
Patients with chronic kidney disease (CKD) display a substantial increase in cardiovascular disease (CVD). Moreover, the prognosis of CVD in CKD is extremely poor.
- Trial name
- NCT04204174
- Testing
- Tyrosine, brand name: myprotein
- Where
- Taiwan
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation
Edible Insect Allergy, Shrimp Allergy
Shrimp Sensitization and Allergy Among Patients With Edible Insect Allergy
This study aims to determine the prevalence of shrimp sensitization and clinical shrimp allergy among patients aged ≥7 years with confirmed allergy to edible insects, including silkworm, bamboo worm, and palm weevil.
- Conditions
- Edible Insect Allergy, Shrimp Allergy, Shrimp Sensitization
- Trial name
- NCT07857187
- Testing
- Edible Insect Oral Food Challenge, White Shrimp Oral Food Challenge
- Where
- Thailand
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Mahidol University
Acute Cannabinoid Intoxication
Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of CB1 Antagonist ANEB-001 in a THC Challenge Test
The aim of this study is to investigate whether ANEB-001 effectively penetrates the brain and inhibits the psychotropic effects of Δ9-Tetrahydrocannabinol (THC), the main psychoactive constituent of cannabis.
- Trial name
- NCT05282797
- Testing
- ANEB-001
- Where
- Netherlands
- Volunteers
- 154 people, healthy volunteers welcome
- Sponsor
- Anebulo Pharmaceuticals
Allergic Rhinitis Due to Pollen
Nasal Allergen Challenge Test as a Method to Detect Clinical Reactivity Against Birch Pollen
Clinical efficacy and tolerability for allergen specific immunotherapy (AIT) with Itulazax (birch pollen extract tablet) is well established.
- Trial name
- NAC (NCT06085963)
- Testing
- ITULAZAX 12 SQ-Bet, Nacl
- Where
- Sweden
- Volunteers
- 89 people, healthy volunteers welcome
- Sponsor
- Karolinska Institutet
Randomised Clinical Trial, Double Blind
Phase I Study of VLPDEN-02 Dengue Vaccine in Healthy Adults
This is a Phase 1, randomized, double-blind, placebo-controlled, dose escalation study. Forty-two flavivirus-naïve adults will be enrolled and will receive 3 administrations of VLPDEN-02 or control at days 0, 28, and 56.
- Conditions
- Randomised Clinical Trial, Double Blind, Dengue, Challenge Test
- Trial name
- NCT07831473
- Testing
- VLPDEN-02 1.0 µg (0.25 µg of each VLP) + ALFQ adjuvant, VLPDEN-02 10 µg (2.5 µg of each VLP) + ALFQ adjuvant, VLPDEN-02 100 µg (25 µg of each VLP) + ALFQ adjuvant
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- VLP Therapeutics
Asthma
The Asthma Bronchial Challenge Study
This is a randomised, controlled, cross-over study to determine the effect of indirect bronchial challenge testing upon volatile organic compounds (VOCs) in the exhaled breath of adults with well-controlled, mild-to-moderate…
- Trial name
- ABC (NCT03575663)
- Testing
- Indirect bronchial challenge
- Where
- United Kingdom
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- University of East Anglia
Intestinal Permeability, Challenge Test
Intestinal Barrier Function and Probiotics.
Rationale: Enterotoxigenic Escherichia coli (ETEC) bacteria adhere to the mucosa of the proximal intestines. There it produces an toxin which presents a local and relevant challenge to the intestines.
- Conditions
- Intestinal Permeability, Challenge Test, Intestinal Health, Inflammation
- Trial name
- NCT01241201
- Testing
- Priobiotic supplement VSL#3
- Where
- Netherlands
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- TNO
Chronic Obstructive Pulmonary Disease, Asthma
Novel Endpoints in Cough Challenge Testing
The sensitivity of a person's cough reflex can be measured by getting them to breathe in (inhale) irritant chemicals. There are different methods by which subjects are asked to inhale these chemicals, either by taking one deep…
- Conditions
- Chronic Obstructive Pulmonary Disease, Asthma, Healthy, Chronic Cough
- Trial name
- NEAT (NCT01566968)
- Testing
- Cough challenge test, 24 hour ambulatory cough recording, Cough quality of life questionnaire
- Where
- United Kingdom
- Volunteers
- 98 people, healthy volunteers welcome
- Sponsor
- Manchester University NHS Foundation Trust
Non IgE Mediated Food Allergy, Food Protein-Induced Enteropathy
Non-Immunoglobulin E-mediated Food Allergies in Children
Non-IgE-mediated gastrointestinal food allergies (non-IgE-GIFA) are an evolving web of clinical conditions characterized by subacute and/or chronic symptoms and include food protein-induced enterocolitis syndrome (FPIES), food…
- Conditions
- Non IgE Mediated Food Allergy, Food Protein-Induced Enteropathy, Food Protein-Induced Proctocolitis, Food Protein-Induced Enterocolitis Syndrome
- Trial name
- NIGEFA (NCT04462978)
- Testing
- Non IgE-mediated food allergy
- Where
- Italy
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Federico II University
Congenital Sucrase-Isomaltase Deficiency
Adult Pilot Study for Reference Ranges and Optimal Cut-offs for the Sucrose Challenge Test and Sucrose Breath Test
An adult pilot study to establish the normal reference range and optimal cutoffs for the oral 50g Sucrose Challenge Test (SCT) and the 50g 13C-Sucrose Breath Test (CBT) for patients with CSID and healthy controls.
- Trial name
- NCT05045495
- Testing
- Sucrose Hydrogen Methane Breath Test
- Where
- United States
- Volunteers
- 211 people, healthy volunteers welcome
- Sponsor
- QOL Medical, LLC
Arrhythmic Right Ventricular Cardiomyopathy
Isoproterenol Challenge to Detect Arrhythmogenic Right Ventricular Cardiomyopathy
This study will examine the usefulness of a new test called an isoproterenol challenge in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC) and family members who may have the disease but do not have clear-cut…
- Trial name
- NCT00083395
- Where
- United States
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- National Institutes of Health Clinical Center (CC)