Application of the indirect haemagglutination test for malaria: reproducibility with Plasmodium falciparum-sensitized cells.

The reproducibility of the IHA test was assessed. Two batches of glutaraldehyde-fixed sheep cells were used and the cells were sensitized with different batches of P. falciparum antigen obtained from 4 owl monkeys. At the individual level the IHA test appears to have a reproducibility of approximately 90%.