Testfile from OpenMedical showed for 1_Kunde_20090612083757162_10009977_.HL7 all values marked with "isPathological"
Rothen put into the 8-th field of the HL7-field always 'N' when a value was not pathological.
All other laboratories left this field empty.
Fix & JUnit4-Test case ready.
In the HL7-specification (downloadable via http://www.hl7.org/library/General/v231.zip\)
we find in Chapter 7:
Abnormal flags (ID) 00576
Definition: This field contains a table lookup indicating the normalcy status of the result. We strongly recommend sending this value when applicable. If the observation is an antimicrobial susceptibility, the interpretation codes are: S=susceptible; R=resistant; I=intermediate; MS=moderately susceptible; VS=very susceptible. (See ASTM 1238 ‑ review for more details). Refer to HL7 table 0078 - Abnormal flags for valid entries.
When the laboratory can discern the normal status of a textual report, such as chest X-ray reports or microbiologic culture, these should be reported as N when normal and A when abnormal. Multiple codes, e.g., abnormal and worse, would be separated by a repeat delimiter, e.g., A~W.
Therefore it should be okay to treat 'N' as a valid value.