Entamoeba histolytica+Entamoeba dispar+Entamoeba ecuadoriensis+Entamoeba nuttalli DNA [Presence] in Specimen by NAA with probe detection 70293-6
LOINC Code
| LOINC code | 70293-6 | ||
|---|---|---|---|
| name | Entamoeba histolytica+Entamoeba dispar+Entamoeba ecuadoriensis+Entamoeba nuttalli DNA [Presence] in Specimen by NAA with probe detection | ||
| description | This code describes molecular detection of Entamoeba histolytica/dispar complex (E. histolytica, E. dispar, E. nuttalli, and E ecuadoriensis) DNA by RT-PCR. It targets a sequence of the DNA coding for the 15S ribosomal RNA that is common to these four species. So a positive result indicates whether any one of these species is present without specifying which one. In the submitter's laboratory, it is used only on human specimens, mostly stool but pus and tissue as well. E. dispar is a commensal in the human digestive tract, and E. histolytica is the only one thought to be pathogenic in humans. The other two species are found in animals and not thought to inhabit the human gut. A positive can be followed up in the submitter's lab by specific identification of the species using DNA sequencing (see LOINC 70294-4). Additional species that have been found in the gut include Entamoeba moshkovskii, Entamoeba poleki, Entamoeba coli, and Entamoeba hartmanni. E. histolytica, E. dispar, and E.moshkovskii are morphologically identical but are different biochemically and genetically. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Entamoeba histolytica+Entamoeba dispar+Entamoeba ecuadoriensis+Entamoeba nuttalli DNA | ||
| 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 | XXX | ||
| scale | Ord = Ordinal: Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive. | ||
| method | Probe.amp.tar | ||
Additional Names | |||
| short name | E his+dis+ecua+nutt DNA Spec Ql NAA+prb | ||
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. | |||
History/Usage | |||
| first released | |||
| last updated | 2.69 | ||
| last change type | MIN - change to field other than name | ||
| change reason | The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016. | ||
Related Names | |||
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