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Measurement Uncertainty, From Theory to Practice

  • Credit:1.0 ACCENT
  • Duration: 1 hour
  • Date:SEP.14.2022 11:30 a.m. - 12:30 p.m.
  • Level: Intermediate

Price: $0.00

Member Price: $0.00

Register for this live webinar to learn about calculating and applying Measurement Uncertainty (MU) in the medical laboratory. With your registration, you will have access to the recording on demand through September 30, 2023.


Calculation of Measurement Uncertainty (MU) is an accreditation requirement for many medical laboratories worldwide. The requirement is derived from ISO 15189:2012, subclause, and now applies to any lab accredited to ISO 15189. MU characterizes the dispersion of the quantity values being attributed to a measurand, but for a long time laboratories continued to include different contributions of uncertainty in their calculations. In 2019, a new guidance document was published: ISO/TS 20914, “Medical laboratories—Practical guidance for the estimation of measurement uncertainty”. This webinar will provide an overview of how to calculate and apply MU in the medical laboratory for quality assurance and interpretation of patient results.


This activity is designed for physicians, lab supervisors, lab directors (and/or assistant directors), lab managers (supervisory and/or non-supervisory), medical technologists, point-of-care coordinators, pathologists, toxicologists, fellows, residents, in-training individuals, and other laboratory professionals overseeing/conducting within this topic.


At the end of this activity, participants will be able to:

  • Explain the Measurement Uncertainty (MU) concept
  • Describe the components of MU incorporated in the calculation presented in ISO/TS 20914 
  • Discuss applications of MU in the medical laboratory


Isolde Seiden LongIsolde Seiden Long, PhD, DCC, FCACB, DABCC
Clinical Biochemist, Alberta Precision Laboratories
Clinical Associate Professor, Department of Pathology and Laboratory Medicine University of Calgary
Calgary, Alberta, Canada


AACC is dedicated to ensuring balance, independence, objectivity, and scientific rigor in all educational activities. All participating planning committee members and faculty are required to disclose to the program audience any financial relationships related to the subject matter of this program. Disclosure information is reviewed in advance in order to manage and resolve any possible conflicts of interest. The intent of this disclosure is to provide participants with information on which they can make their own judgments.

The following faculty reported the following relevant financial relationship(s) during the content development process for this activity:

  • Isolde Seiden Long, PhD, DCC, FCACB, DABCC
    Presenter/Speaker: Bio-Rad


All recommendations involving clinical medicine are based on evidence accepted within the profession of medicine as adequate justification for their indications and contraindications in the care of patients; AND/OR all scientific research referred to or reported in support or justification of a patient care recommendation conforms to generally accepted standards of experimental design, data collection, and analysis.


This activity is approved for 1.0 ACCENT® continuing education credits. Activity ID# 4098. This activity was planned in accordance with ACCENT® Standards and Policies.


Verification of Participation certificates are provided to registered participants based on completion of the activity, in its entirety, and the activity evaluation. For questions regarding continuing education, please email [email protected].