The Department of Health and Human Services, specifically the National Institutes of Health (NIH), is seeking quotes for the acquisition of a U-Rhythm device intended for endocrine and metabolic research at the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). The procurement aims to obtain U-RHYTHM microdialysis collection devices, which are crucial for monitoring hormone levels in interstitial tissue fluid over extended periods in real-world settings, and includes essential components such as a portable syringe pump, microdialysis catheter, tubing assemblies, and processing kits. This equipment is vital for advancing scientific understanding and treatment options in endocrine and metabolic health. Interested vendors should contact Amber Harris at amber.harris@nih.gov for further details, as the solicitation is not set aside for small businesses and will be evaluated based on technical compliance and cost, with a Firm-Fixed Price purchase order to be delivered and accepted at the NIH facility in Bethesda, Maryland.