LOINCActiveObservation

LOINC Code 33867-3: Blood velocity/Blood velocity 2 by US

33867-3 is a LOINC code used to identify Blood velocity/Blood velocity 2 by US 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 Blood velocity/Blood velocity 2. It is commonly used with the system or sample type {Circulatory system}.

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 Blood velocity/Blood velocity 2. It is commonly used with the system or sample type {Circulatory system}.

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: Observation
  • Method: US

What it does not mean

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

Key facts

  • Blood velocity/Blood velocity 2 by US
  • Blood velocity/Blood velocity 2
  • This is a generic ratio of two blood velocities
  • Bld vel; Cardio; Cardiology; Circ; Circ sys; Echography; GENERAL ULTRASOUND; Heart Disease; II; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Vel; Vel 2; Velocity ratio

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

Blood velocity/Blood velocity 2 by USBld vel/Vel 2 USBlood velocity/Blood velocity 2GEN.USVelRtoPt{Circulatory system}

Frequently asked questions

Code details

Code33867-3
SystemLOINC
Display nameBlood velocity/Blood velocity 2 by US
DescriptionBlood velocity/Blood velocity 2
Short nameBld vel/Vel 2 US
ComponentBlood velocity/Blood velocity 2
PropertyVelRto
TimingPt
System (specimen){Circulatory system}
ScaleQn
MethodUS
ClassGEN.US
Example unitsratio
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.48

Part names

Blood velocity/Blood velocity 2VelRtoPt{Circulatory system}QnUSVelocity RatioPoint in time (spot)Ultrasound

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 33867-3 | HealthAssure