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Left Ventricular Peak Velocity, Systolic and Diastolic — Doppler Echocardiography

Published: August 9, 2026Updated: August 16, 2026

A Doppler ultrasound measurement of peak blood-flow speed through the left ventricle during systole and diastole.

Quick summary

["This test uses ultrasound to assess left-ventricular blood-flow speed during the heart's contraction and relaxation phases."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
29428-0
Short code
PV-LL Vmax sys/dias DOP
Synonyms
PV-LL Vmax sys/dias DOP
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-doppler
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What is this test?

This is a Doppler echocardiography measurement of the peak speed of blood flow in the left ventricle, the heart's main pumping chamber. It evaluates flow during systole, when the heart contracts, and diastole, when it relaxes and fills.

Why might I need this test?

It may be used to help evaluate heart function, blood flow through the heart, and possible signs of heart-valve or pumping abnormalities. It is often part of a complete echocardiogram rather than a standalone test.

How is the test performed?

A technician applies ultrasound gel to the chest and moves a probe over several areas while recording images and Doppler flow signals. The test is painless and does not involve radiation or needles.

How do I prepare for the test?

No special preparation is usually needed. You may be asked to lie on your side or back and to briefly hold your breath or remain still while the images are recorded.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Left Ventricular Doppler Velocity

Frequently asked questions

Does this test require radiation?
No. It uses sound waves to create images and measure blood flow, so no radiation is involved.
Is the test painful?
No. The ultrasound probe may feel firm against the chest, but the examination itself is generally painless.
Can I do this test at home?
No. It requires an ultrasound machine and a trained sonographer or cardiology team.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy