LOINC long common name : Giardia sp [Presence] in Water by Immunofluorescence;
LOINC short name : Giardia Wat Ql IF;
LOINC description : Giardia oocysts and cysts are identified in water through immunofluorescence, where
they are characterized by size, shape, and fluorescence and then counted. The US Environmental
Protection Agency has published guidelines for processing a water sample for testing
(https://www.epa.gov/sites/production/files/2015-07/documents/epa-1623.pdf). This
process starts with filtering a water sample to remove solids, then elutes the material
and centrifuges the elute to pellet the oocysts and cysts. These are then removed
from other materials in the sample and stained with fluorescent antibodies for analysis.;