<prompt> Screening under RNTCP emphasizes onSputum microscopyChest X-rayPCRSputum culture  <response>: Over-reliance on chesl X-ray was a draw back of National Tuberculosis Programme NTP which was over come by Revised National Tuberculosis Control ProgrammeRNTCP which staed diagnosing patient by sputum microscopy ;A nation-wide network of RNTCP qaality assured designated sputum smear microscopy laboratories has been set up, providing appropriate, available, affordable and accessible diagnostic services for TB suspects and cases. Ref: Park 24th edition 