LOINC display name : L. pneumophila Ag IF Ql (Tiss);
LOINC long common name : Legionella pneumophila Ag [Presence] in Tissue by Immunofluorescence;
LOINC short name : L pneumo Ag Tiss Ql IF;
LOINC description : 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];