Malaria Peripheral Smear (Thick and Thin)

Infectious Disease

Normal Reference Ranges

Adult

Negative for parasites Qualitative / Parasitemia %

Pediatric

Negative for parasites Qualitative / Parasitemia %

Clinical Significance

Thick smear detects presence; thin smear identifies the species and parasitemia percentage. Crucial for guiding antimalarial therapy.

Causes of High

  • Malaria (Plasmodium falciparum, vivax, ovale, malariae, knowlesi)
  • Babesiosis (can look similar on smear)

Causes of Low

  • Normal finding