The HL7 Observation Result (ORU) R01 message transmits observations and results from the producing system/filler i.e. LIS, EKG system) to the ordering system/placer (i.e. HIS, physician office application). It may also be used to transmit result data from the producing system to a medical record archival system, or to another system not part of the original order process. ORU messages are also sometimes used to register or link to clinical trials, or for medical reporting purposes for drugs and devices.
Types of observations reported in the ORU-R01 message include:
Clinical lab results
Imaging study reports
EKG pulmonary function study results
Patient condition or other data (i.e. vital signs, symptoms, allergies, notes, etc.)
The ORU message is a structured report where each observation is separated into an individual entity, and then separated into fields. ORU messages do not carry images; they use varying data types but most often use text, numbers and codes.