The number of eggs per gram of feces (EPG) can be used as a measure of intensity of infection by Clonorchis sinensis.
Common methods for counting eggs in the feces:
(1) direct smear
(2) Kato-Katz smear
number of eggs per gram of feces using direct smear =
= (number of eggs counted) * (1000 mg) / (mg of stool used to make the smear)
number of eggs per gram of feces by direct smear =
= (3.76 * (number of EPG by Kato-Katz method)) - 2,479
number of eggs per gram by Kato-Katz method =
= (0.266 * (number of EPG by direct smear)) + 659.4
Number of Eggs per Gram Feces by Kato-Katz Method
Infection Intensity
0
negative
1 to 500
light
501 to 1,999
moderate
>= 2,000
heavy
To read more or access our algorithms and calculators, please log in or register.
Specialty: Infectious Diseases
ICD-10: ,