Which of the following is an established diagnostic method used to confirm a malaria infection?
Answer
Polymerase chain reaction (PCR)
Explanation
The slides list microscopy, RDTs, PCR, and placental histology. Routine electrocardiography is not presented as a malaria diagnostic test. **Key takeaway:** Available methods range from blood-based parasite detection to tissue examination.\n\n**Glossary:** **PCR**: polymerase chain reaction, a molecular method for detecting parasite genetic material; **placental histology**: microscopic examination of placental tissue.