LOINCActiveBoth

LOINC Code 107641-3: von Willebrand factor activity.GPIbM/vWf Ag Turbidimetry (PPP) [Ratio]

107641-3 is a LOINC code used to identify von Willebrand factor activity.GPIbM/vWf Ag Turbidimetry (PPP) [Ratio] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component von Willebrand factor activity.GPIbM/von Willebrand factor Ag. It is commonly used with the system or sample type PPP.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component von Willebrand factor activity.GPIbM/von Willebrand factor Ag. It is commonly used with the system or sample type PPP.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Both
  • Method: Turbidimetry

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

von Willebrand factor activity.GPIbM/von Willebrand factor (vWf) Ag [Ratio] in Platelet poor plasma by Turbidimetry
von Willebrand factor activity.GPIbM/von Willebrand factor Ag
Activ; Actvty; COAGULATION; Fac; Fact; Movements; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; Ratios; Rto; Von will; Vonwillebrand; vWf; vWf activity.GPIbM; vWf activity.GPIbM/vWf Ag; vWfAc; vWF:Ag

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

von Willebrand factor activity.GPIbM/vWf Ag Turbidimetry (PPP) [Ratio]von Willebrand factor activity.GPIbM/von Willebrand factor (vWf) Ag [Ratio] in Platelet poor plasma by TurbidimetryvWf activity.GPIbM/vWF Ag PPP-Rtovon Willebrand factor activity.GPIbM/von Willebrand factor AgCOAGvon Willebrand factor activity.GPIbM/ von Willebrand factor (vWf) antigen, BloodRatio

Frequently asked questions

Code details

Code107641-3
SystemLOINC
Display namevon Willebrand factor activity.GPIbM/vWf Ag Turbidimetry (PPP) [Ratio]
Descriptionvon Willebrand factor activity.GPIbM/von Willebrand factor Ag
Short namevWf activity.GPIbM/vWF Ag PPP-Rto
Componentvon Willebrand factor activity.GPIbM/von Willebrand factor Ag
PropertyRatio
TimingPt
System (specimen)PPP
ScaleQn
MethodTurbidimetry
ClassCOAG
Example unitsRatio
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.81
Last changed2.82

Consumer names

von Willebrand factor activity.GPIbM/ von Willebrand factor (vWf) antigen, Blood

Part names

von Willebrand factor activity.GPIbM/von Willebrand factor AgRatioPtPPPQnTurbidimetryPoint in time (spot)Platelet poor plasma

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.