Great information on COVID-19 Labs from the Association of Public Health Laboratories (APHL)
https://www.aphl.org/programs/preparedness/Crisis-Management/COVID-19-Response/Pages/default.aspx
COVID-19 HL7 Data Messaging FAQs
Tested link on Mar 25 2020 and PDF no longer available; cannot locate.
https://www.aphl.org/programs/preparedness/Crisis-Management/Documents/03.03.2020_Updated_Informatics_FAQs_Guidance_(002).pdf
See bottom of Page 2/top of Page 3 for ORU_R01 COVID-19 sample messages (2.5.1 and 2.3.1) for four scenarios:
1) Inconclusive
2) Not Detected
3) SpmUnsat (specimen unsatisfactory)
4) Detected
Message segments are:
MSH | Message Header
PID | Patient Identification
ORC | Order Common
OBR | Observation Request
OBX | Observation Result
NTE | Note
SPM | Specimen