is an interactive search tool for navigating biospecimens available for research purposes from studies of myalgic encephalomyelitis, also known as chronic fatigue syndrome (ME/CFS).

The goal of is to facilitate biospecimen selection based on phenotypic and clinical attributes of study participants who contributed biospecimen samples and to initiate the process of applying for access to selected biospecimens.

Currently, houses clinical and biospecimen data from the Chronic Fatigue Initiative (CFI) and the Multi-Site Clinical Assessment of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (MCAM) studies.

was created with funding from multiple National Institutes of Health (NIH) and Centers that are part of the Trans-NIH MECFS Working Group and is hosted by RTI International, which serves as the Data Management and Coordinating Center for the ME/CFS Research Network.