LOINCActiveBoth

LOINC Code 4680-5: vWf ristocetin cofactor Qn (PPP)

4680-5 is a LOINC code used to identify vWf ristocetin cofactor Qn (PPP) 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.ristocetin cofactor. 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.ristocetin cofactor. 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

What it does not mean

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

Key facts

von Willebrand factor (vWf) ristocetin cofactor [Units/volume] in Platelet poor plasma
von Willebrand factor.ristocetin cofactor
AggRecetin; Arbitrary concentration; COAGULATION; Cofact; Fac; Fact; Hematology; Heme; Plas; Platelet poor plasma; Point in time; QNT; Quan; Quant; Quantitative; Random; Risto; Von will; Vonwillebrand; vWf; vWfRCo

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

vWf ristocetin cofactor Qn (PPP)von Willebrand factor (vWf) ristocetin cofactor [Units/volume] in Platelet poor plasmavWf:RCo PPP-aCncvon Willebrand factor.ristocetin cofactorCOAGvWf ristocetin cofactor, BloodACnc

Frequently asked questions

Code details

Code4680-5
SystemLOINC
Display namevWf ristocetin cofactor Qn (PPP)
Descriptionvon Willebrand factor.ristocetin cofactor
Short namevWf:RCo PPP-aCnc
Componentvon Willebrand factor.ristocetin cofactor
PropertyACnc
TimingPt
System (specimen)PPP
ScaleQn
ClassCOAG
Example unitsarb U/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.73

Consumer names

vWf ristocetin cofactor, Blood

Part names

von Willebrand factor.ristocetin cofactorACncPtPPPQnvon Willebrand factor (vWf) ristocetin cofactorArbitrary ConcentrationPoint 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.

LOINC Code 4680-5 | HealthAssure