Kato-Katz thick smear
E534577
parasitological diagnostic technique
quantitative helminth egg count method
stool examination method
Kato-Katz thick smear is a parasitological stool examination technique widely used to quantify helminth eggs, especially for diagnosing intestinal schistosomiasis and soil-transmitted helminth infections.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
parasitological diagnostic technique
ⓘ
quantitative helminth egg count method ⓘ stool examination method ⓘ |
| appliesTo |
animal stool samples
ⓘ
human stool samples ⓘ |
| basedOn | microscopic examination of stool ⓘ |
| comparedWith |
FLOTAC technique
NERFINISHED
ⓘ
Koga agar plate method ⓘ formol-ether concentration technique ⓘ |
| dataTypeProduced |
infection intensity categories
ⓘ
quantitative egg counts ⓘ |
| detects |
Ascaris lumbricoides eggs
ⓘ
Schistosoma japonicum eggs ⓘ Schistosoma mansoni eggs ⓘ Trichuris trichiura eggs ⓘ hookworm eggs ⓘ |
| developedBy |
K. Kato
NERFINISHED
ⓘ
M. Katz NERFINISHED ⓘ |
| hasFeature |
allows calculation of eggs per gram of stool
ⓘ
relatively low cost ⓘ simple to perform in field settings ⓘ standardized amount of stool examined ⓘ |
| hasLimitation |
hookworm eggs may clear rapidly after preparation
ⓘ
limited sensitivity for light Schistosoma infections ⓘ limited sensitivity for low-intensity soil-transmitted helminth infections ⓘ reduced sensitivity in low-intensity infections ⓘ requires fresh stool samples ⓘ |
| measurementUnit | eggs per gram of stool ⓘ |
| preparationStep |
clearing stool before microscopic reading
ⓘ
covering stool with glycerol-soaked cellophane ⓘ filling template hole with sieved stool ⓘ removing template to leave standardized stool amount on slide ⓘ sieving stool to remove large particles ⓘ |
| readingTime |
typically 30 minutes after preparation for Schistosoma eggs
ⓘ
within 30–60 minutes for hookworm eggs ⓘ |
| recommendedBy |
World Health Organization for mapping schistosomiasis
ⓘ
World Health Organization for monitoring soil-transmitted helminths ⓘ |
| supports | classification of infection intensity according to WHO thresholds ⓘ |
| usedFor |
diagnosis of intestinal schistosomiasis
ⓘ
diagnosis of soil-transmitted helminth infections ⓘ epidemiological surveys of helminth infections ⓘ monitoring mass drug administration programs for helminths ⓘ quantification of helminth eggs in stool ⓘ |
| usedIn |
endemic areas of schistosomiasis
ⓘ
endemic areas of soil-transmitted helminthiasis ⓘ |
| usesMaterial |
cellophane strip
ⓘ
glycerol-malachite green solution ⓘ microscope glass slide ⓘ template with defined hole volume ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.