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P: 202-261-4510 • F: 202-835-0440 •

Customer Support


MLE offers prompt, knowledgeable customer service including experienced laboratory professionals for technical support.

MLE Customer Service Representatives are available Monday-Friday from 9:00 a.m. to 5:00 p.m. Eastern Time to assist you with the following:

Additionally, experienced laboratory professionals will guide you through the following:

Call MLE Customer Service 800-338-2746, ext. 4510 or 202-261-4510, or e-mail us at, for any questions about MLE, proficiency testing or any other laboratory related issues.

Contact us with any questions at 202-261-4510 or via email at