Table 1.
Strengths and weaknesses of culture techniques and molecular methods. Abbreviations: PCR, polymerase chain reaction; RT, real time; NGS, next generation sequencing; MIC, minimum inhibitory concentration.
| Culture Testing | PCR/RT-PCR | Genomic Technologies | |
|---|---|---|---|
| Advantages | Widely available and cheaper than NGS | Rapidly completed in 4–8 h | Pathogen identification and characterisation independent of culturing and microbe isolation |
| Only basic equipment necessary | Increased identification of less common organisms such as viruses | Reduced time for slow growing pathogen identification, typing and characterisation | |
| Test multiple targets in one sample | Faster identification of outbreak clusters | ||
| Higher sensitivity than culture testing | Higher sensitivity and specificity, better resolution | ||
| Disadvantages | Failures in the identification of fastidious bacteria and organisms that cannot be cultured | Higher costs than culturing | Higher costs than culturing |
| Increased time for slow-growing pathogen identification and typing | High specific design of primers and need for a list of potential pathogens | Requirement of highly specialised laboratory equipment and trained personnel | |
| Requires special media and specific condition for the different microorganisms | Inability to determine the MIC of a compound | Inability to determine the MIC of a compound |