Question

How many oil immersion fields to be examined to declared the smear negative?
a. No bacilli found in 100 VF
b. No bacilli found in 50 VF
c. No bacillI found 200 VF
d. No bacilli in 300 VF​

Answer 1

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The smear was checked for acid-fast bacilli under oil immersion and reported according to the Revised National Tuberculosis Control Program (RNTCP laboratory module – 1999). Negative = No AFB seen per 100 oil immersion fields. Scanty =1–9 AFB per 100 oil immersion fields

Answer 2

Answer:

The smear was checked for acid-fast bacilli under oil immersion and reported according to the Revised National Tuberculosis Control Program (RNTCP laboratory module – 1999). Negative = No AFB seen per 100 oil immersion fields. Scanty =1–9 AFB per 100 oil immersion fields.