What is the advantage and disadvantage of kato thick smear technique?

The main disadvantage: it cannot be used to identify hookworm eggs. The other main argument against the Kato technique is that it is messy and therefore exposes technicians to an unnecessarily high risk of infection.Advantages of the Kato thick smear method include: it detects low infections which may be missed by the brine flotation method; it gives a higher egg count even in light infections; it is easy to prepare and this method involves less expense.