The National Institutes of Health (NIH) has announced a funding opportunity titled "Integrating Biospecimen Science Approaches into Clinical Assay Development (U01 Clinical Trial Not Allowed)," aimed at supporting extramural research to address challenges in clinical assay development due to preanalytical variability in biospecimens. The initiative focuses on improving the reliability and validity of biomarker assays related to small biopsies and liquid biopsies, with the goal of standardizing biospecimen handling practices to enhance clinical diagnostics in oncology. Eligible applicants include a diverse range of institutions, and funding is available for cooperative research projects with a maximum budget of $250,000 per year for up to five years. Interested parties should submit their applications by September 13, 2024, and can direct inquiries to the NIH OER Webmaster at OERWebmaster03@od.nih.gov.