Ova and Parasite Urine
Establish the diagnosis of parasitic infection, primarily with Schistosoma haematobium
The diagnosis of Schistosoma haematobium infection is achieved by examination of urine specimens for eggs. Both 24-hour and spot urine samples should be examined to enhance detection. S haematobium egg excretion exhibits a circadium rhythm, with the peak occurring between noon and 3 PM. Egg output is enhanced by physical exercise combined with fluid intake prior to urination. In very light or chronic infections, eggs may be very difficult to detect in urine; consequently, multiple urine sample examinations may be required. Occasionally eggs of S mansoni may also be detected in urine.