A report covering Japan's diagnostic laboratory market has been published. It estimates the market size at US$15.38 billion as of 2025 and projects that it will expand to US$27.80 billion by 2035, with average annual growth of 6.1%.
Japan's diagnostic laboratory market was estimated at approximately US$15.38 billion as of 2025 and is projected to expand at a compound annual growth rate of 6.1% from 2026 to 2035, reaching US$27.80 billion by 2035. This growth is being supported by advances in testing, automation and digitalisation, as well as the expansion of high-value-added fields such as molecular diagnostics and cancer diagnostics.
The market comprises two segments: hospital-based diagnostic laboratories and independent diagnostic laboratories. Historically, hospital-based laboratories accounted for approximately 46% of the market share. They play a major role in performing complex tests at large and advanced acute-care hospitals, while independent laboratories benefit from the economies of scale and concentration of expertise achieved by consolidating testing operations.
Factors driving the diagnostic laboratory market include the increase in chronic diseases associated with population aging, a greater emphasis on preventive healthcare, and advances in testing and the use of AI. In 2025, research and development and supply chains were strengthened through initiatives including Otsuka Pharmaceutical's opening of a laboratory in Tokyo and a strategic partnership between Sysmex and QIAGEN K.K. Meanwhile, challenges such as personnel shortages, regulatory burdens and rising operating costs could constrain market growth.
The expansion of government-supported screening programs and the adoption of digital diagnostic solutions are expected to help narrow regional disparities and improve testing quality. Going forward, partnerships between companies and investment in technology in high-value-added fields such as pathology, molecular diagnostics, cancer testing and digital diagnostics are expected to determine competitiveness.