The Clinical Research Support Laboratory (CRSL) is the primary non-CLIA certified laboratory responsible for collecting, processing, stabilizing, documenting, shipping, and tracking all research biospecimens from patients participating in clinical trials supported by the Yale Cancer Center Clinical Trials Office in New Haven at Smilow Cancer Hospital as well as across the Smilow Cancer Hospital Cancer Center network. Healthcare workers (HCW) are defined as university employees working a healthcare setting who have the potential for direct or indirect exposure to patients, human research subjects or infectious materials including body substance, contaminated medical supplies, devices and equipment, surfaces, or air.