UT MD Anderson Cancer Center

(A2LA Cert. No. 7585.01) 11/17/2025 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 UT MD ANDERSON CANCER CENTER 1515 Holcombe Boulevard Room B1.4832 Houston, TX 77030 Stephanie Lampe Phone: 713 792 3233 CALIBRATION Valid To: December 31, 2027 Certificate Number: 7585.01 In recognition of the successful completion of the A2LA evaluation process (including an assessment of the organization’s compliance with R205 – A2LA’s Calibration Program Requirements), accreditation is granted to this laboratory to perform the following calibrations1, 4: I. Ionizing Radiation & Radioactivity Parameter/Equipment Range CMC2, 3 (±) Comments Thimble Ionization Chambers – 60Co: Air Kerma / Exposure 60Co: Absorbed Dose 1 Gy/min / 100 R/min 1 Gy/min 1.3 % 1.3 % Reference & field class instruments Well-Ionization Chambers – LDR: 137Cs LDR: 125I, 103Pd, 131Cs LDR: 192Ir Up to 150 U (0.2 to 25) U LDR 2.3 % 2.3 % 2.3 % Reference & field class instruments

(A2LA Cert. No. 7585.01) 11/17/2025 Page 2 of 2 Parameter/Equipment Range CMC2, 3 (±) Comments Radioactive Sources – LDR: 137Cs LDR: 125I, 103Pd, 131Cs LDR: 192Ir Up to 150 U (0.2 to 25) U LDR 2.3 % 2.3 % 2.3 % Single sources Electrometers – Charge Current (0.1 to 600) nC 5 pA to 1000 nA 0.26 % 0.26 % Therapy: to interface with either thimble or well-ionization chambers ___________________________________________ 1 This laboratory is conditionally available for commercial service. 2 Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurement that a laboratory can achieve within its scope of accreditation when performing more or less routine calibrations of nearly ideal measurement standards or nearly ideal measuring equipment. CMCs represent expanded uncertainties expressed at approximately the 95 % level of confidence, usually using a coverage factor of k = 2. The actual measurement uncertainty of a specific calibration performed by the laboratory may be greater than the CMC due to the behavior of the customer’s device and to influences from the circumstances of the specific calibration. 3 In the statement of CMC, percentages are percentage of reading, unless otherwise indicated. 4 This scope meets A2LA’s P112 Flexible Scope Policy.