Inheres in for SARS-CoV-2 tests and in general

871557008 | Detection of ribonucleic acid of Severe acute respiratory syndrome coronavirus 2 in oropharyngeal swab (observable entity) | now has 704319004 |Inheres in (attribute)| = 31389004 |Oropharyngeal structure (body structure)|, which might not represent the meaning of the concept. The location of specimen taking is selected because of its representativeness of the patient as a whole but the infection is not limited to the oropharyngeal structure.

While evidence is limited, there are indications that SARS-CoV-2 infects multiple types of tissue in multiple locations: https://www.nature.com/articles/s41421-021-00249-2

Current (2021-07-31) defintion is:

=== 363787002 |Observable entity (observable entity)| :
  { 246093002 |Component (attribute)| = 1240411000000107 |Ribonucleic acid of Severe acute respiratory syndrome coronavirus 2 (substance)| }
  { 370130000 |Property (attribute)| = 705057003 |Presence (property) (qualifier value)| }
  { 704319004 |Inheres in (attribute)| = 31389004 |Oropharyngeal structure (body structure)| }
  { 704327008 |Direct site (attribute)| = 461911000124106 |Swab specimen from oropharynx (specimen)| }

Alternative values for Inheres in could be e.g. 278826002 | Body internal region (body structure) | (as used in 276885007 | Core body temperature (observable entity) |) if the test is done to determine the presence of the virus in the patient rather than the presence of the virus in oropharynx.

For comparison:

NPU59105 Secr(Nasoph)—Severe acute respiratory syndrome coronavirus 2(RNA); arb.c.(proc.) = ?

LOINC: 94759-8 SARS-CoV-2 (COVID-19) RNA [Presence] in Nasopharynx by NAA with probe detection (system = Nph)