Routine Validation and Reproducibility Testing of Laboratory Assays and Research Techniques Used for Metabolism Research
Bettina Mittendorfer
Summary
The purpose of this research study is to validate (check the accuracy of) laboratory assays, intravenous catheter insertion, and equipment or devices and their reproducibility, which is necessary to perform high quality research on chronic diseases (obesity, pre-diabetes and type-2 diabetes, dyslipidemia, non-alcoholic fatty liver disease, cardiovascular disease, etc.), nutrition, and metabolism (the process by which a substance is handled in your body) at the University of Missouri. As technology changes and we start to use new testing methods, it is necessary to compare results from old tests, equipment and devices and new tests, equipment, or devices and the reproducibility of these measurements to make sure we are getting accurate results. Reproducibility means performing the same test more than once to see if the same results can be achieved each time.
Eligibility
- Age range
- 18–75 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: * ≥18 and ≤75 years of age * body mass index ≥18.5 and ≤45 kg/m2 * Weight stable (i.e., ≤3% change) * ≤150 min of structured exercise/week for at least 2 months before entering the study * Blood glucose: \< 126 mg/dl fasted, \< 200 mg/dl with 2 hour oral glucose tolerance testing * Hemoglobin A1C (HbA1C) ≤6.5% * Dyslipidemia triglycerides ≥125 mg/dL * No chronic kidney disease * Not vegan or vegetarian or on high protein diet (e.g. Atkins) or supplements that are not allowed * No intolerance or allergies to study diet ingredients * No excessive alcohol or tobacco consumpti…
Interventions
- Otherendothelial cell collection
Participants may opt to have testing performed including blood sampling, intravenous catheter placement with endothelial cell collection, oral glucose tolerance test, consuming a test meal, having imaging performed such as MRI, DEXA, MRS to investigate use of different assays, different sample treatment approaches to determine optimal conditions that produce the most accurate and reproducible results, and/or repeat testing on different days or with different equipment that measures the same variable.
Location
- University of Missouri School of MedicineColumbia, Missouri