Aquaporin 4 water channel IgG Ab [Titer] in Cerebral spinal fluid by Immunofluorescence 88056-7
LOINC Code
| LOINC code | 88056-7 | ||
|---|---|---|---|
| name | Aquaporin 4 water channel IgG Ab [Titer] in Cerebral spinal fluid by Immunofluorescence | ||
| description | In vivo, IgG antibodies against aquaporin-4 (AQP4) cause fluorescence of small cerebral vessels, the pia and subpia, and the Virchow-Robin space on the optic nerve and cerebellar tissue. In vitro, cells transfected with AQP4 show smooth cytoplasmic fluorescence in the presence of AQP4 IgG antibodies with little fluorescence of the nucleus. This term was created for, but is not limited in use to, the Euroimmun NMO-IgG/aquaporin-4 immunofluorescence assay. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Aquaporin 4 water channel Ab.IgG | ||
| property | Titr = Dilution Factor (Titer) | ||
| 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 | CSF = Cerebral spinal fluid | ||
| scale | SemiQn | ||
| 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 | AQP4 H2O channel IgG Titr CSF IF | ||
Basic Attributes | |||
| class | SERO | ||
| type | 1 Laboratory | ||
| order vs. observation | Both | ||
| example UCUM units | {titer} The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | ||
| example unit | titer | ||
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 | 2.75 | ||
| last change type | MAJ - change to name field other than Component; | ||
| change reason | Release 2.67: CLASS: Corrected Class from CHEM to SERO; COMPONENT: Updated "receptor" to "water channel" per current scientific nomenclature | ||
Related Names | |||
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