<prompt> True of malaria diagnosis -Thick smear is gold standard to identify speciesThin smear is better to identify speciesAll have same incubationAntibody detection is used for rapid diagnosis  <response>: 1. Examination of peripheral blood smears thin and thick blood films: Gold standard method: Thick smear: More sensitive 40 times, used for quantification and malaria pigment detection Thin smears: Used for speciation Feathery tail end of the smear should be examined At least 200-300 oil immersion fields should be examined before considered as negative. 2. Incubation periods- P. vivex: 14 days, P. falciparum: 12 days, P. malariae: 28 days, P. ovale: 17 days. 4. Ab detection in serum is not used for diagnosis of malaria. It is useful for - Epidemiological survey in malaria Screening of blood bank 