Related Experiment Video
Updated: Aug 15, 2026
Comparative Analysis of Automatic Fecal Analyzer versus Direct Wet Smear Microscopy for Detecting Parasitic Infections in Stool Samples
Published on: April 25, 2025
Correlation of egg counts of Clonorchis sinensis by three methods of fecal examination
Min Ho Choi1, Tao Ge, Shang Yuan
1Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Infectious Diseases, Seoul National University Medical Research Center, Seoul 110-799, Korea.
Abstract:
The Kato-Katz (KK) method is a well-known method of fecal examination for helminthiases. Its diagnostic sensitivity was found very high for clonorchiasis. The present study evaluated the correlation of Clonorchis sinensis egg counts by the KK method with those by direct smear and formalin-ether (FE) technique. The egg counts obtained by the KK method (Y) were correlated with the counts by direct smear (X) with the equation of Y = 659.4 + 0.266X (r2 = 0.738), but not with those by the FE method. The present study demonstrated that the KK method and direct smear were useful for both qualitative and quantitative diagnosis of clonorchiasis, especially in the field.
