SNOMED CT® Release Format 1 (RF1) Guide - ihtsdo

The SNOMED CT Relationships Table enables even broader searches such as, for example, all body fluid
analyzes . Since Urinalysis is a Body fluid analysis all the LOINC codes shown above would be included in
the search, in addition to LOINC codes for CSF analyzes , joint fluid analyzes , etc.
The SNOMED CT - LOINC Integration provides a mechanism that reflects the complementary relationship
between LOINC and SNOMED CT.This integration yields formally defined appropriately classified laboratory
terms that can be implemented in the design of robust laboratory analysis applications.
Table 161: Comments on Some LOINC Analyte Names and Their Corresponding SNOMED CT Codes
LOINC Analyte Name(s)
ENTEROTOXIN
ANTHRAQUINONE
9,10-ANTRHACENEDIONE
BUTANE N-BUTANE
HEXANE N-HEXANE
DIOXANE 1,4-DIOXANE
HEXACHLOROCYCLOHEXANE
GAMMA
HEXACHLOROCYCLOHEXANE
SNOMED CT ID
SNOMED CT
ConceptId
C-00226
116554007
C-10097
----------
116283009
C-20522
73229004
C-20524
40647006
C-20529
123008003
C-21304
27247007
C-23112
49490007
C-91170
77496001
Comments
This may represent an assay for bacterial
enterotoxins, but rotavirus also produces an
enterotoxin, and so we use the more general parent
term C-00226 Enterotoxin, instead of the more specific
term C-36205 Bacterial enterotoxin.
LOINC lists 9,10 anthracenedione as a related name
for ANTHRAQUINONE, with CAS number 84-65-1
(the number for 9,10anthracenedione. The SNOMED
CT code means the class of anthraquinones, which
includes anthraquinone antineoplastics (e.g.
mitoxantrone) as well as anthraquinone laxatives and
anthraquinone dyes. We assume an anthraquinone
assay would measure any anthraquinone, not just
9,10anthracenedione.
Butane and n-butane are generally regarded as
synonyms. In other words, ordinarily isobutane
(C-20527) is specified explicitly, and is not counted
as a subtype of butane.
Unlike butane, hexane is a general term for 6-carbon
saturated hydrocarbons. N-hexane is one isoform.
Assume dioxane is 1,4-diethylene dioxide, same as
1,4-dioxane.
LOINC lists CAS 608-73-1, but this refers to
hexachlorocyclohexane mixed isomers
(SNOMEDcode C-20885). We assume a
hexachlorocyclohexane assay would measure any
isomer or mixture of isomers, so the parent term
C-23112 is the right one, even though it does not
correspond to CAS 608-73-1.
© 2002-2012 International Health Terminology Standards Development Organisation CVR #: 30363434
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