Prefilled formalin vials sales will expand through 2036, with 90-500 mL vials at 23.4% within the product size segment and hospitals and clinics at 45.0% of the end user category in 2026. The market is estimated at USD 476.8 million in 2026 and is forecast to record a 3.8% CAGR between 2026 and 2036.