74808-7
LOINC Code
| LOINC code | 74808-7 | ||
|---|---|---|---|
| name | |||
| 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 | Act/Nor; Activ; Actvty; COAGULATION; Control; EIA; ELFA; ELISA; Enzyme immunoassay; Fac; Fact; Hematology; Heme; i; IAA; imm 1:1 NP; MEIA; Movements; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; Relative ratio; SUDS; | ||
Basic Attributes | |||
| class | COAG | ||
| type | 1 Laboratory | ||
| order vs. observation | vWf:Ac Act/Nor | ||
| 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) | ||
Member of these Panels | |||
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History/Usage | |||
| first released | |||
| last updated | 2.73 | ||
| last change type | MIN - change to field other than name | ||
| change reason | % | ||
Related Names | |||
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