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LOINC Code 77726-8: Factor VIII+von Willebrand factor (vWf) ristocetin cofactor given FVIII dosing Qn (Dose)

77726-8 is a LOINC code used to identify Factor VIII+von Willebrand factor (vWf) ristocetin cofactor given FVIII dosing Qn (Dose) 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 Factor VIII+von Willebrand factor.ristocetin cofactor given. It is commonly used with the system or sample type Dose.

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 Factor VIII+von Willebrand factor.ristocetin cofactor given. It is commonly used with the system or sample type Dose.

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: FVIII dosing

What it does not mean

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

Key facts

Factor VIII+von Willebrand factor (vWf) ristocetin cofactor given [Units/volume] by FVIII dosing
Factor VIII+von Willebrand factor.ristocetin cofactor given
The amount of factor VIII (FVIII) and Von Willebrand factor.ristocetin cofactor (vWFRCo) complex given based on FVIII dosing for patients with hemophilia A. For dosing based on vWF for patients with Von Willebrand disease (VWD), see [LOINC: 77725-0]. This term was created for, but not limited in use to, Humate-P. According to the package insert provided by the submitter, Humate-P is an antihemophilic factor/von Willebrand factor complex approved to treat and prevent bleeding in adult patients with hemophilia A and also to treat spontaneous or trauma-induced bleeding episodes as well as prevent excessive bleeding during and after surgery in adults and children with von Willebrand disease (VWD).
AggRecetin; Arbitrary concentration; BLOOD BANK; Cofact; Dose med or substance; F8; Fac; Fact; Fact VIII; Factor 8; FVIII; FVIII dose; FVIII+vWfRCo; Gvn; Point in time; QNT; Quan; Quant; Quantitative; Random; Risto; Von will; Vonwillebrand; vWf; vWf:RCo

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

Factor VIII+von Willebrand factor (vWf) ristocetin cofactor given FVIII dosing Qn (Dose)Factor VIII+von Willebrand factor (vWf) ristocetin cofactor given [Units/volume] by FVIII dosingFVIII+vWf:RCo Gvn Dose FVIII dose-aCncFactor VIII+von Willebrand factor.ristocetin cofactor givenBLDBKFactor VIII+von Willebrand Factor (vWf) Ristocetin Cofactor given doseACnc

Frequently asked questions

Code details

Code77726-8
SystemLOINC
Display nameFactor VIII+von Willebrand factor (vWf) ristocetin cofactor given FVIII dosing Qn (Dose)
DescriptionFactor VIII+von Willebrand factor.ristocetin cofactor given
Short nameFVIII+vWf:RCo Gvn Dose FVIII dose-aCnc
ComponentFactor VIII+von Willebrand factor.ristocetin cofactor given
PropertyACnc
TimingPt
System (specimen)Dose
ScaleQn
MethodFVIII dosing
ClassBLDBK
Example unitsIU/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.52
Last changed2.68

Consumer names

Factor VIII+von Willebrand Factor (vWf) Ristocetin Cofactor given dose

Part names

Factor VIII+von Willebrand factor.ristocetin cofactor givenACncPtDoseQnFVIII dosingArbitrary ConcentrationPoint in time (spot)

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.