Study Type

General Health & Wellbeing

Study Purpose

The METFLEX research study will evaluate how a person’s metabolism changes after eating different types of food. Metabolism is the process our bodies go through to convert food into energy.

About the Study

Once enrolled, participants will be provided either a high-fat or low-fat diet prior to spending the night in a metabolic chamber to measure metabolism. Once the first overnight visit is complete, participants will leave for 5 to 7 days and return for another overnight visit.

Another meal will be provided prior to the second overnight visit. Participants will receive either a high-fat or low-fat diet depending on which meal was provided during the first overnight visit.

Study Design

Number of Visits: 

  • 1 screening visit
  • 3 study visits, including 2 overnight stays


  • Medical history
  • Height and weight
  • Vital signs (pulse and blood pressure)
  • Questionnaires
  • Urine Pregnancy Test (women of child bearing potential)
  • Blood draws
  • Metabolic Chamber
  • Continuous glucose (blood sugar) monitoring
  • DXA Scan (to measure bone, muscle and body fat)

Study Qualifications

To qualify for this research study, participants should:

  • Be between 18 to 40 years old
  • Have a Body Mass Index (BMI) between 20 - 30 calculate your BMI
  • Not be a smoker
  • Not be pregnant

* You may not qualify for this study based on other eligibility criteria not listed. The study coordinator will go over this information in detail.

Study Duration

Participation in this research study will last approximately 2-7 weeks.


Compensation of up to $425 is offered for the completion of this study.

Study Contact

If you are interested in volunteering for this research study, click here to screen online, call 225-763-3000 or e-mail

If you think you may be eligible, please click the button below to screen online.


Please do not fill out this questionnaire for anyone other than yourself unless you are their legal guardian.
If you know someone who may be interested please direct them to the site or have them call us directly at 225-763-3000.


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