The global lab-on-paper diagnostics market is projected to grow from USD 819.4 million in 2025 to USD 1,376.5 million by 2035, at a CAGR of 5.3%. By product type, paper-based microfluidic devices will lead with a 29.6% share, while by application, infectious disease diagnostics will dominate with a 37.4% share in 2025.