73817-9
LOINC Code
| LOINC code | 73817-9 | |
|---|---|---|
| name | ||
| description | The percent inhibition by heparin is determined by adding excess heparin (high-dose heparin) to the patient's serum. Testing is performed to increase the specificity of the assay and confirm a positive heparin induced antibody result. Inhibition of a positive result by 50% or more reduction in the optical density is considered confirmatory and characteristic of Type II heparin induced thrombocytopenia (HIT) antibodies. | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Percent heparin inhibition | |
| property | Ratio | |
| 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 | Hep; Hepar; Heparn; Point in time; Prcnt hep inhibited; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; Serology; Serum; SR | |
Basic Attributes | ||
| class | SERO | |
| type | 1 Laboratory | |
| order vs. observation | Prcnt hep inhib | |
| formula (readable) | % heparin inhibition = 1-([Heparin induced platelet Ab.IgG with excess heparin - negative control]/[Heparin induced platelet Ab.IgG without excess heparin - negative control]) x 100 | |
| 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) | |
History/Usage | ||
| first released | ||
| last updated | 2.44 | |
| last change type | MIN - change to field other than name | |
| change reason | % | |
Related Names | ||
| hierarchy paths | LOINC Home {component} LP432695-7 Laboratory LP29693-6 Serology - non-micro LP7844-6 Platelet factor 4 polyanion (PVS) complex LP173559-8 Percent heparin inhibition LP172606-8 Percent heparin inhibition | Serum | Serology - non-micro LP403872-7 LOINC Home {component} LP432695-7 Laboratory LP29693-6 Serology - non-micro LP7844-6 Platelet factor 4 polyanion (PVS) complex LP173559-8 Platelet factor 4 polyanion (PVS) complex Ab LP173655-4 Platelet factor 4 polyanion (PVS) complex IgG LP172876-7 Percent heparin inhibition LP172606-8 Percent heparin inhibition | Serum | Serology - non-micro LP403872-7 LOINC Home {component} LP432695-7 Laboratory LP29693-6 Serology - non-micro LP7844-6 Platelet factor 4 heparin complex induced LP173560-6 Percent heparin inhibition LP172606-8 Percent heparin inhibition | Serum | Serology - non-micro LP403872-7 | |
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