A patient’s antibody screen was positive and an anti-c was identified. Antiglobulin crossmatches were performed with c-negative units and 1 of the 6 units was incompatible. What should be performed to...

A patient’s antibody screen was positive and an anti-c was identified. Antiglobulin crossmatches were performed with c-negative units and 1 of the 6 units was incompatible. What should be performed to resolve the incompatible crossmatch?

a. Give O-negative red blood cells

b. Retype the incompatible unit for the c antigen

c. Perform a DAT on the incompatible unit

d. Perform additional identification testing to include low-specificity antigens

e. b, c, and d