Since 1978, we have been assisting the food manufacturing industry in the effort to produce safe and quality food products.



MCL is a Seattle based ISO/IEC 17025 accredited food testing lab specializing in microbiological and allergen testing.  Our goal is to provide fast and accurate test results in a customer friendly, approachable way.  Your needs are our priority, and we are happy to help.


MCL offers a variety of microbiology and allergen tests on finished food products, raw ingredients, and environmental samples.  For a full list of services, go Here!


MCL is an ISO/IEC 17025:2005 accredited laboratory. ISO which stands for the International Organization for Standardization, is considered to be the single most important standard for testing laboratories.  In order to become ISO accredited, MCL had to demonstrate technical competence and the ability to produce precise and accurate test results.  We undergo a third party auditing process every year to make sure we are continuing to uphold these standards. This auditing process evaluates many aspects of our lab, including but not limited to:

  • Technical competency of each lab technician
  • Selection of suitable methods
  • Validation of methods
  • Integrity of data collection, data storage, and data transmission
  • Maintenance and calibration of lab equipment.
  • Traceability of all calibration reference materials to national standards
  • Proper storage and handling of all samples
  • Internal quality control program, including proficiency testing.
  • Documentation of all technical records establishing an audit trail for all samples

To become an ISO accredited laboratory, a lab does not need to have all of its testing methods listed on its scope of accreditation.  If a test is not listed on a lab's scope of accreditation it is not required to meet any of the above qualifications, and it is not subjected to an auditing process. At MCL we are proud that over 95% of the methods we use are on our scope of accreditation.


There are many ways to get samples to us.  We provide our own courier service to the greater Seattle and Kent areas several times a week.   If your location is not along our pickup route, or if you need to get samples to us faster, you are always welcome to stop by the lab and pay us a visit.  We always enjoy seeing our customers!  Local courier services also make a great option for same day deliveries. Not local? Not a problem.  You can easily ship your samples to us via FedEx, UPS, or USPS.


We always strive to give the best customer service possible, but the MCL experience is more than that.  We want you to feel comfortable asking any and all questions about the testing process and the results you receive.  Need help interpreting your lab report?  Have questions about methodology? Need to do some troubleshooting for a problem in your facility?  Contact us and we will help in any way that we can.  Some labs call this ‘consulting’ and charge you extra, but we believe it’s just a part of the service that all of our customers should receive.