In CAP question TRM.31400 it states in the notes that "Anti-IgG reactivity of antiglobulin reagents may be checked during antibody screening and crossmatching." It is my interpretation that we no longer have to set up a QC tube with anti-IgG and check cells as you are adding check cells to all negative patient antibody screens. Is this correct? Also, it is stated that "Typing sera and reagent cells must be checked for reactivity and specificity on each day of use, including a check against known positive and negative cells or antisera." Does this mean I have to have a positive (commercial QC) and negative (saline or such) for the antisera and cells?