Legionella pneumophila Ag [Presence] in Lower respiratory specimen by Immunofluorescence 89594-6
LOINC Code
| LOINC code | 89594-6 | ||||
|---|---|---|---|---|---|
| name | Legionella pneumophila Ag [Presence] in Lower respiratory specimen by Immunofluorescence | ||||
| description | Immunofluorescence testing of lower respiratory 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] | ||||
| status | ACTIVE | ||||
Fully-Specified Name | |||||
| component | Legionella pneumophila Ag | ||||
| property | PrThr = Present or threshold: The Property PrThr stands for “Presence or Threshold”, meaning either a) the actual presence or absence of an analyte, or b) that the amount of analyte detected is over some predetermined threshold. | ||||
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | ||||
| system | Respiratory system specimen.lower | ||||
| scale | Ord = Ordinal: Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive. | ||||
| method | IF = Immune Fluorescence: Encompasses DFA, IFA, FA. Usually applies to cells and smears examined microscopically so that both the “where” and the “what” can be assessed, but can also be used on fluids in a way similar to ELISA. Does not include Cell binding assays (see CBA IFA above). | ||||
Additional Names | |||||
| short name | L pneumo Ag Lower resp Ql IF | ||||
Basic Attributes | |||||
| class | MICRO | ||||
| type | 1 Laboratory | ||||
| order vs. observation | Both | ||||
Associated Observations | |||||
LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations. | |||||
Member of these Groups | |||||
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History/Usage | |||||
| first released | |||||
| last updated | 2.77 | ||||
| last change type | MAJ - change to name field other than Component; | ||||
| change reason | Release 2.77: SYSTEM: Updated to standardize the representation of "Respiratory system specimen" in the System subhierarchy across LOINC; | ||||
Related Names | |||||
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