The electronic order (order entry) is an easy and safe
form of the requisition of laboratory analytes. Not only a
special template should be available for each entry/customer
but also preanalytical requirements and patient
preparation for each analyte and the preferred sample
materials should be shown when ordering the analyte in
the form of an interactive program. Artificial intelligence
can support the requisition by suggesting analytes in,
e.g., differential thyroid diagnosis, combination of tumor
markers or in the staged diagnosis of vitamin deficiency
(vitamin B12/transcobalamin). Self-learning systems can
analyze the requisition behavior and alert the user if he/
she has forgotten relevant analytes [artificial intelligence/
self-learning systems with user (doctor) interaction are
only possible in the case of order entry].