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 data from the Chronic Fatigue Initiative study and information about associated biospecimens stored in the central biobank. Because of validation procedures, the clinical data will be made available in waves, with the first wave including demographic and lifestyle characteristics of the participants.

was created with funding from multiple NIH Institutes 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.