Diagnostic Tests

A Gram staining of a sputum sample is an example of a ________ method of microbial identification.

• genotypic

• immunologic

• phenotypic

• histologic

Care should be taken to avoid contamination with __________ when taking samples from a patient.

• air

• water

• droplet nuclei

• normal microbiota

Oxidase testing, which tests for the presence of the cytochrome enzyme and shows a blue color when positive is an example of _____________

• biochemical testing

• immunologic testing

• serology

• PCR

Immunologic methods rely on the principle of antigen-antibody binding.

• True

• False

RT-qPCR is a genotypic technique that can best be described as _______.

• Fast, automated that relies on fluorescence when antibody-antigen binds

• Fast, automated that relies on gel electrophoresis during DNA/amplification

• Fast, automated that relies on fluorescence during DNA/amplification