Abstract: A transuctaneous fluid kit for controllably evacuating fluid from a fluid site to a fluid collector, while preventing an outrush of fluid from the fluid site. A cannula is provided for fluid collection at the site to be drained. A Y-connector is provided at the proximal end of the needle. A one-way valve is mounted to the first leg of the Y-counter to prevent the outrush of fluid upon insertion of the cannula to the fluid site. A second leg of the Y-connector is provided for carrying evacuated fluid to a collection device via tubing.