von Willebrand factor (vWf).activity actual/normal in Platelet poor plasma by Immunoassay --immediately after 1:1 addition of normal plasma 74808-7
LOINC Code
| LOINC code | 74808-7 | ||
|---|---|---|---|
| name | von Willebrand factor (vWf).activity actual/normal in Platelet poor plasma by Immunoassay --immediately after 1:1 addition of normal plasma | ||
| description | Decreased levels of von Willebrand factor (vWF) activity can lead to significant bleeding abnormalities. Decreased levels may be due to decreased production of von Willebrand factor or the presence of an inhibitor. Normal control plasma is added to patient plasma in equal amounts to evaluate the cause of the decreased vWF activity. | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | von Willebrand factor.activity actual/Normal^immediately after 1:1 addition of normal plasma | ||
| property | RelRto = Relative 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 | PPP = Platelet poor plasma | ||
| 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 | IA = Immunoassay: Encompasses all immunoassays with a few exceptions, including Immune Blot and Immune Fluorescence, which were created based on historic usage. | ||
Additional Names | |||
| short name | vWf:Ac Act/Nor imm 1:1 NP PPP IA | ||
Basic Attributes | |||
| class | COAG | ||
| 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. | |||
Member of these Panels | |||
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History/Usage | |||
| test rank | 17026 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 | ||
| change reason | Renamed Method from "Imm" to "IA" for consistency across classes (approved by Laboratory LOINC Committee 2016 12). | ||
Related Names | |||
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