This test is performed when a patient has
The test result is normal, if no growth is seen in 48 hours. It means absence of respiratory tract infection.
The test result is abnormal, if growth of bacteria is seen. It could be
The exact organism is identified by seeing under the microscope. After that this culture growth is exposed to various antibiotics and zone of inhibition is noted. A complete zone of inhibition with certain specific antibiotic suggests that the antibiotic used is the drug of choice for the ongoing infection