89595-3
LaboratoryLegionella pneumophila Ag [Presence] in Tissue by Immunofluorescence
Definition
Immunofluorescence testing of lung biopsy specimens for Legionella pneumophila antigen has over 99% specificity, but only 25-70% of patients with culture-positive disease test positive for the antigen. Therefore, IF cannot be used to rule out Legionella infection, but a positive result is nearly always diagnostic. [http://www.who.int/water_sanitation_health/emerging/legionella.pdf]
LOINC 6-Axis Classification
Component
Legionella pneumophila Ag
Property
PrThr
Time Aspect
Pt
System
Tiss
Scale Type
Ord
Method Type
IF
Details
Class
MICRO
Order/Observation
Both
Short Name
L pneumo Ag Tiss Ql IF
Display Name
L. pneumophila Ag IF Ql (Tiss)
Related Names
Frequently Asked Questions
What is LOINC code 89595-3?
LOINC code 89595-3 identifies "Legionella pneumophila Ag [Presence] in Tissue by Immunofluorescence". Immunofluorescence testing of lung biopsy specimens for Legionella pneumophila antigen has over 99% specificity, but only 25-70% of patients with culture-positive disease test positive for the antigen. Therefore, IF cannot be used to rule out Legionella infection, but a positive result is nearly always diagnostic. [http://www.who.int/water_sanitation_health/emerging/legionella.pdf]
What does 89595-3 measure?
This code measures Legionella pneumophila Ag in Tiss. It belongs to the MICRO class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.