Performs work in a variety of laboratory disciplines, such as chemistry, hematology, and virology. This is an OPEN CONTINUOUS ANNOUNCEMENT and will remain open until May 31, 2022 or until all positions are filled. A qualification review will be conducted every 2 weeks and qualified candidates will be referred to the Services upon their need for recruitment. Current permanent VA employees and Federal employees from other federal agency should apply under CBST-11310663-22-HYC. Applicants pending the completion of educational or certification/licensure requirements may be referred and tentatively selected but may not be hired until all requirements are met. BASIC REQUIREMENTS: 1. United States Citizenship: Non-citizens may only be appointed when it is not possible to recruit qualified citizen