Serotonin release 1.0 IU/mL heparin.low molecular weight [Units/volume] in Serum 88459-3
LOINC Code
| LOINC code | 88459-3 | ||
|---|---|---|---|
| name | Serotonin release 1.0 IU/mL heparin.low molecular weight [Units/volume] in Serum | ||
| description | The SRA test is a functional assay that measures heparin-dependent platelet activation. Patient serum is incubated with donor platelets containing radioactive 14C serotonin and different concentrations of heparin. Antibody present in the patient serum will bind and activate donor platelets, releasing radiolabeled serotonin from the platelet granules. A positive SRA is expected to show >20% release of the 14C serotonin when mixed with patient serum and low-dose heparin. In addition, the high-dose heparin must reduce the % release obtained with low-dose heparin by at least 50% in order to demonstrate that the platelet activation is heparin dependent. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Serotonin release 1.0 IU/mL heparin.low molecular weight IU = Intrauterine | ||
| property | ACnc = Arbitrary Concentration | ||
| 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 | Ser = Serum | ||
| 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 | |||
Additional Names | |||
| short name | SRA 1.0 IU/mL LMW heparin Ser-aCnc | ||
Basic Attributes | |||
| class | SERO | ||
| type | 1 Laboratory | ||
| order vs. observation | Both | ||
| example UCUM units | % 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 | % | ||
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 | 2.64 | ||
| last change type | ADD - added | ||
Related Names | |||
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