Application of sweat sensors in glucose and lactate detection. (a) Schematic of sensor based on coated carbon cloth (Reprinted with permission from Ref. [201], Copyright 2023, Elsevier); (b) Schematic representation of glucose assay chemistry performed with unstitched gold wires (Reprinted with permission from Ref. [202], Copyright 2021, Elsevier); (c) Systematic sensing mechanisms for glucose and urea detection (Reprinted with permission from Ref. [203], Copyright 2021, Elsevier); (d) Systematic sensing mechanisms for glucose and urea detection (Reprinted with permission from Ref. [204], Copyright 2023, Elsevier); (e) System fiber layer breakdown (Reprinted with permission from Ref. [205], Copyright 2023, Elsevier).