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Date: 10-27-2025 Dear UTAK LABORATORIES INC, Quest Diagnostics values UTAK LABORATORIES INC's contribution to our operations and testing quality. In the spirit of ongoing collaboration and quality improvement we are sharing with you a quarterly snapshot of your company’s Quality Performance*. It is not an overall assessment of your company and does not replace SLA’s in contractual agreements. It is provided to spark good communication between our companies about performance, and it gives you a perspective about 2025 3rd Quarter to add to your internal data. If you would like to discuss the scoring particulars, please contact your Supplier Quality Manager or your Category Manager at Quest Diagnostics. For your convenience, you may use our secure, daily monitored, central email address to communicate with us: QuestSupplierCommunication@QuestDiagnostics.com My door is always open to you as well. Sincerely, Paul Butts, Director QMS QuestSupplierCommunication@QuestDiagnostics.com 5 Product/Service Quality and Performance Score Calculated score based on the number of SCAR’s opened in the Quarter and adjusted by RIM (Assessment of Severity and Impact) 5 Quality Collaboration Partnership (QCP) Assessment of degree of collaborative partnering on quality and performance, including timeliness, transparency and responsiveness in quality problem management and SCARS, complaint investigations, problem solving sessions, etc. 5 Supplier Self- Assessment (SSA) Completeness Status Completion of Quickbase Supplier Self-Assessment or SSA not completed) The three metrics above reflect on performance in the Quarter and should not be interpreted as an overall assessment. However, for your awareness, UTAK LABORATORIES INC's rolling last 12 months Product/Service Quality and Performance Score is 3. *Disclosure: Scorecard results do not replace existing contractual agreement Quality or Service Level performance terms.