HLA-B21 [Presence] in Donor 4818-1
LOINC Code
| LOINC code | 4818-1 | ||
|---|---|---|---|
| name | HLA-B21 [Presence] in Donor | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | HLA-B21 | ||
| 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 | Bld/Tiss^Donor Bld = Whole blood Tiss = Tissue, unspecified | ||
| scale | Ord = Ordinal: Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive. | ||
| method | |||
Additional Names | |||
| short name | HLA-B21 Donr Ql | ||
Basic Attributes | |||
| class | HLA | ||
| type | 1 Laboratory | ||
| order vs. observation | Observation | ||
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 | 2.56 | ||
| last change type | MAJ - change to name field other than Component; | ||
| change reason | This test is commonly performed on cells found in saliva and buccal swabs as well as blood specimens. Changed specimen from 'Bld^donor' to 'Bld/Tiss^donor' to represent both specimen types.; 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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