74808-7
Laboratoryvon Willebrand factor (vWf).activity actual/normal in Platelet poor plasma by Immunoassay --immediately after 1:1 addition of normal plasma
Definition
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.
LOINC 6-Axis Classification
Component
von Willebrand factor.activity actual/Normal^immediately after 1:1 addition of normal plasma
Property
RelRto
Time Aspect
Pt
System
PPP
Scale Type
Qn
Method Type
IA
Details
Class
COAG
Order/Observation
Both
Short Name
vWf:Ac Act/Nor imm 1:1 NP PPP IA
Display Name
vWf.activity actual/normal immediately after 1:1 addition of normal plasma IA (PPP) [Relative ratio]
Related Names
Frequently Asked Questions
What is LOINC code 74808-7?
LOINC code 74808-7 identifies "von Willebrand factor (vWf).activity actual/normal in Platelet poor plasma by Immunoassay --immediately after 1:1 addition of normal plasma". 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.
What does 74808-7 measure?
This code measures von Willebrand factor.activity actual/Normal^immediately after 1:1 addition of normal plasma in PPP. It belongs to the COAG class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.