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, nutrition, and metabolism (the process by which a substance is handled in the body) at the University of Missouri. As technology changes and uses 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 the results are accurate. Reproducibility means performing the same test more than once to see if the same results can be achieved each time. This study will look at the validation and reproducibility of tests and laboratory assays in participants who are healthy or affected by relevant endocrine, cardiometabolic, and musculoskeletal disorders.
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Evaluation of the validity and reproducibility of insulin results in the laboratory environment
Timeframe: through study completion, up to 6 months
Validation and reproducibility testing for endothelial cell collection
Timeframe: through study completion, up to 6 months
Validation and reproducibility testing for mixed meal ingestion
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of urinalysis results in the laboratory environment
Timeframe: through study completion, up to 6 months
Validation and reproducibility testing for glucose tolerance testing
Timeframe: through study completion, up to 6 months
Validation and reproducibility testing for DEXA
Timeframe: through study completion, up to 6 months
Validation and reproducibility testing for MRI
Timeframe: through study completion, up to 6 months
Validation and reproducibility testing for MRS
Timeframe: through study completion, up to 6 months
Validation and reproducibility of vascular (endothelial) function test
Timeframe: through study completion, up to 6 months
Validation and reproducibility of adipose (fat) tissue biopsy
Timeframe: through study completion, up to 6 months
Validation and reproducibility testing of muscle tissue biopsies
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of C-peptide results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of glucagon results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of free fatty acid level results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of glucose results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of ketone body results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of cytokine results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of adipokine results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of lipid profile results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of urine calcium results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of urine magnesium results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of urine phosphorous results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of urine sodium results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of urine oxalate results in the laboratory environment
Timeframe: through study completion, up to 6 months
Evaluation of the validity and reproducibility of urine citrate results in the laboratory environment
Timeframe: through study completion, up to 6 months