Course Introduction | Overview | Plasmodium falciparum | Plasmodium vivax
Plasmodium ovale | Plasmodium malariae | Other infections | Tests
Is this smear positive or negative?
This is an alkaline buffer with overstained RBCs. It is positive, but some of the parasites have nuclei that are almost black, making it difficult to discern whether the colors red and blue are present.
If you look at the arrow on the far right, you will see a typical trophozoite of P. falciparum. Notice the characteristic half ring with two nuclei.