Validation and Reproducibility Testing of Lab Assays and Research Methods for Endocrine, Cardiometabolic, and Musculoskeletal Disorders at the University of Missouri

What this Trial Is About

Researchers are conducting a study to check the accuracy and consistency of various laboratory tests, equipment, and devices used for research on chronic diseases, nutrition, and metabolism. This includes participants who are healthy or have endocrine, cardiometabolic, and musculoskeletal disorders. The goal is to ensure that new testing methods produce reliable results compared to older methods as technology advances. Participants may undergo tests such as blood and urine sampling, intravenous catheter placement with endothelial cell collection, oral glucose tolerance tests, and consuming test meals. Imaging techniques like MRI, DEXA, and MRS, along with adipose and muscle biopsies, and non-invasive endothelial function tests may also be performed. These procedures help researchers evaluate different assays and sample treatments and repeat tests to confirm accuracy and reproducibility. During the study, participants will have various assessments and laboratory tests to measure outcomes including insulin, urinalysis, glucose tolerance, vascular function, tissue biopsies, and multiple blood and urine markers. These tests will be repeated and compared over up to six months to validate their consistency. The study involves healthy volunteers and individuals with specific health conditions, with all tests conducted under research supervision to monitor results closely.

Routine Validation and Reproducibility Testing of Laboratory Assays and Research Techniques Used for Endocrine, Cardiometabolic, and Musculoskeletal Disorder Research (VALD)