Table 2.

Different methods of triaging patients before endoscopy.

Study	History	CBC	CXR	CT	PCR
Al Mahtab et al. [12]	Yes	Yes	Yes
Alboraie et al. [1]	Yes	Yes			Yes
An et al. [14]	Yes	Yes	Yes	Yes	Yes
Mauro et al. [15]				Yes	Yes
Becq et al. [9]					Yes
Chen et al. [16]					Yes
Dioscoridi and Carrisi [17]	Yes
Ebigbo et al. [7]	Yes				15%
Forbes et al. [19]	Yes
Garbe et al. [20]	Yes				Yes
Manes et al. [34]					Yes
Huang et al. [23]					Yes
Ikehara et al. [24]				Yes	Yes
Kim et al. [26]	Yes	Yes		Yes	Yes
Kushnir et al. [27]	Yes				Yes
Liu et al. [29]	Yes			Yes	Yes
Lui et al. [11]	Yes
Maida et al. [32]	Yes
Moreels [38]					Yes
Navaneethan et al. [39]	Temperature and COVID-19 symptoms
O’Grady et al. [40]		Yes			Yes
Medas et al. [42]	Yes, by questionnaire
Moraveji et al. [44]					Yes
Sobani et al. [45]	Yes	Yes	Yes	Yes	Yes
D'Ovidio et al. [08]	YES
Belle et al. [47]					Yes
Zorniak et al. [49]	Yes				Yes

CBC: complete blood count; CXR: chest X ray; CT: computed tomography; PCR: polymerase chain reaction.