Test Directory

Welcome to the new Mainstream Diagnostic Laboratory Test Directory

Searching for a test is easy! Use our helpful resources, and tools to narrow your search by specialty and test category.

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Cardiology
Endocrinology,Diabetes & Metabolism
Gastroenterology
General

Our Test Directory includes detailed test information, collection guides and reference ranges for many of our tests. Details includes test and result codes, specimen collection requirements, specimen transport, special considerations, and methodology.

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