T-cell receptor excision circle [#/volume] in DBS by NAA with probe detection 62320-7
LOINC Code
| LOINC code | 62320-7 | ||
|---|---|---|---|
| name | T-cell receptor excision circle [#/volume] in DBS by NAA with probe detection | ||
| description | In newborn screening laboratories where dried blood spots (DBS) are the only available specimens, the test for T cell receptor excision circles (TREC) has been established as a reliable method in population-based pilot studies. TRECs are circular episomal DNA generated at the rearrangement of T cell antigen-receptor gene segments during maturation of T lymphocytes in the thymus. They are non-replicating byproducts that stay in the recent thymic emigrants in the peripheral blood. As such, they can serve as sensitive markers of T cell production in the newborn infant. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | T-cell receptor excision circle | ||
| property | NCnc = Number Concentration (count/vol) | ||
| 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.dot = Blood filter paper | ||
| scale | Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256 | ||
| method | Probe.amp.tar | ||
Additional Names | |||
| short name | TREC # DBS NAA+probe | ||
Basic Attributes | |||
| class | CHEM | ||
| type | 1 Laboratory | ||
| order vs. observation | Both | ||
| example UCUM units | {copies} 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 | copies | ||
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 Panels | |||
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History/Usage | |||
| test rank | 11973 of 2000 most commonly performed tests by labs in USA | ||
| first released | |||
| last updated | 2.73 | ||
| last change type | MIN - change to field other than name | ||
Related Names | |||
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