👉 Eligible fluids in a clinical context refer to any bodily fluid that can be drawn or analyzed for diagnostic purposes, excluding blood plasma and other specific types like cerebrospinal fluid or synovial fluid, which are typically excluded due to their unique composition and the specialized methods required for analysis. These fluids include serum, plasma, interstitial fluid, and various body fluids like urine, feces, and amniotic fluid. Each type is assessed for various conditions, such as infections, metabolic disorders, and kidney function, among others.