Laboratory Testing in NYS Schools - Limited Laboratory License (LSL)

Questions on obtaining Limited Service Lab Certificates can be directed to the NYSODH Clinical Laboratory Evaluation Program (518) 485-5378 or

A Limited Laboratory License (LSL) is the NYS equivalent to the Clinical Laboratory Improvement Amendment (CLIA) waiver required by federal law for conducting certain simple laboratory tests.

NYSDOH Resources

NYSDOH Wadsworth Limited Service Laboratories (LSL) Webpage
The Wadsworth Center (WC) is the public health laboratory of the NYS Department of Health (NYSDOH). Public and private schools that choose in-person learning in Yellow, Orange, and Red "micro-cluster" zones must complete COVID-19 testing in accordance with NYSDOH Guidance. An NYS Limited-Service Laboratory Certificate (LSL) is required for conducting tests.

NYSDOH Guidance for following Standard Practices in Laboratory Medicine
For sites performing waived and/or provider-performed microscopy procedures under a Limited Service Laboratory Registration) provides a chart of what is required to perform COVID-19 tests authorized under the LSL. It includes required training, who can be a lab director, and their duties.  

CDC Resources

Ready? Set? Test! Patient Testing is Important. Get the Right Results | CDC
The training will help to assure that testing personnel have the basic training necessary to safely and accurately perform patient testing waived under the Clinical Laboratory Improvement Amendments of 1988.  

This CDC checklist and booklet review what is needed to conduct waived testing and can be helpful for those considering on-site COVID-19 testing at schools. Sites performing only waived tests must obtain a Certificate of Waiver by applying for this certification for each location performing testing.
Note: A NYS Limited Service Lab Certificate (LSL) is the NYS equivalent of a Federal Clinical Laboratory Improvement Amendment (CLIA) waiver.  

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Page Updated 8/12/22