LOINC
Version 2.70

98021-9Rivalta test [Presence] in Body fluidActive

Part Descriptions

LP426321-8   Rivalta test
The Rivalta test is a manual test to distinguish transudates from exudates. The test is performed by adding a drop of the specimen being tested to an acetic acid solution. If a precipitate forms, then the test is positive, meaning that the fluid is an exudate. If the fluid dissipates, it is considered negative, meaning the fluid is a transudate. [PMID: 22913882] Source: Regenstrief LOINC

LP7238-1   Body fld
The LOINC "Body fld" System represents body fluids other than serum, plasma, blood, urine, and cerebrospinal fluid. When a LOINC term with the System "Body fld" is used, the specific specimen source or body fluid type should be reported elsewhere with the result. Where more specific terms for pleural, peritoneal, synovial fluid, etc. exist, we encourage you to use the more specific terms. In contrast to “Body fld”, the System “Asp” in LOINC represents the fluid withdrawn during an aspiration procedure from an abnormal collection of fluid, such as from an abscess or cyst. “Asp” is used for abnormal fluid collections that are aspirated, while “Body fld” is used for named body fluids, such as synovial fluid or peritoneal fluid, that are not inherently pathologic. Source: Regenstrief LOINC

Fully-Specified Name

Component
Rivalta test
Property
PrThr
Time
Pt
System
Body fld
Scale
Ord
Method

Additional Names

Short Name
Rivalta test Fld Ql
Display Name
Rivalta test Ql (Body fld)
Consumer Name Alpha
Rivalta test, Body fluid

Example Answer List LL360-9

Source: Regenstrief Institute

Answer Code Score Answer ID
Positive Copyright http://snomed.info/sct ID:10828004 Positive (qualifier value) LA6576-8
Negative Copyright http://snomed.info/sct ID:260385009 Negative (qualifier value) LA6577-6

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.70
Last Updated
Version 2.70
Order vs. Observation
Observation

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=98021-9