Trillium offers various conjugated antibodies against human CD markers for diagnostic use. Also offered are fetal hemoglobin antibodies and their FETALtrol(tm) fetal hemoglobin control kit. FETALtrol is a tri-level, assayed human blood control designed to document and monitor values obtained from test methods used to determine fetal RBC's in maternal blood samples. It is composed of human adult erythrocytes (Rho negative) supplemented with human cord blood erythrocytes (RHO positive).