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View State Lists of Approved NAHLN Laboratories

Click on a state to see the laboratory listings in that state:

This page provides important information for existing NAHLN labs, including SOP lists and maps of current NAHLN laboratories. The lists/maps are updated as changes occur.  Information on joining the NAHLN is also provided below.

For more information on NAHLN membership requirements or how your laboratory can join, please contact the NAHLN Program Office.

Read more about the approval process.

All proficiency tests for the NAHLN are administered through NVSL’s reference laboratories. Click here to access the current list of PTs available through NVSL.

NAHLN Home Page
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