A donor's red cells are nonreactive at immediate-spin anti-D testing but react at the weak-D phase. How should the donor unit generally be labeled for transfusion purposes?
1RhD negative because immediate spin was negative
2ABO indeterminate
3RhD positive✓ 정답
4RhD status is unrelated to donor labeling
해설
A donor whose cells demonstrate weak D is treated as RhD positive so that D-positive cells are not transfused to an RhD-negative recipient as D-negative blood.