Chemically modified anti-D reacted negatively in a patient with a warm-reacting autoantibody. A Du test was performed using monospecific IgG, which was positive in Coombs' phase. A fetal screen (rosette test) was also performed on this patient and showed no rosettes when viewed microscopically. Based on these results, what is the correct Rh type of this patient?

Question

Quizplus · Accepted Answer

The patient has a warm-reacting autoantibody, which is reacting with the chemically modified anti-D. The Du test is positive, indicating the presence of anti-D. The fetal screen is negative, indicating that the patient is Rh-negative.

Chemically Modified Anti-D Reacted Negatively in a Patient with a Warm-Reacting