Key words : confocal microscopy, false negative, limitation, QC, quality control, RCM
| Funding sources: None.
| Conflicts of interest: Dr Gill is a consulting investigator on an investigator-initiated study sponsored by DBV Technologies. Dr Grant-Kels has no conflicts of interest to declare.
| Ms Fox is employed by and owns shares in Caliber, Imaging and Diagnostics Inc, the manufacturer of the Vivascope 1500, which is the device that is used to collect the in vivo reflectance confocal microscopic images described in this article.