Diagnosis
The diagnosis of HDN is based on history and laboratory findings:
Blood tests done on the newborn baby
- Biochemistry tests for jaundice
- Peripheral blood morphology shows increased reticulocytes. Erythroblasts (also known as nucleated red blood cells) occur in moderate and severe disease.
- Positive direct Coombs test (might be negative after fetal interuterine blood transfusion)
Blood tests done on the mother
- Positive indirect Coombs test
Read more about this topic: Erythroblastosis Fetalis