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Interventricular Septum Thickness — 2D Ultrasound

Published: August 9, 2026Updated: August 17, 2026

This echocardiogram measurement assesses the thickness of the wall separating the heart's two lower chambers.

Quick summary

["The measurement helps evaluate heart structure and may contribute to assessing heart function."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
29430-6
Short code
IVS Thickness dia 2D US
Synonyms
IVS Thickness dia 2D US
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
22
Ref high
198
Critical range
— – 10000 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
us-d
CPT
82553
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?

Interventricular septal thickness is an ultrasound measurement of the muscular wall separating the right and left lower chambers of the heart. It is generally obtained as part of an echocardiogram, sometimes called an echo.

Why might I need this test?

This measurement may be used to evaluate heart structure, investigate symptoms such as shortness of breath or chest discomfort, and monitor certain heart conditions. It is often interpreted together with other echocardiographic findings rather than as a stand-alone result.

How is the test performed?

A trained sonographer places an ultrasound probe on the chest and captures moving images of the heart. The clinician reviews these images to measure the interventricular septum and assess the size, shape, and function of the heart.

How do I prepare for the test?

No special preparation is usually required. You may be asked to lie on your side or turn onto your back, and the test generally takes about 30 to 60 minutes.

Reference range

Adult males: 22-198 U/L; Females: 22-198 U/LN/A

Specimen: serum

No special preparation required. Inform provider of any chest pain or symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Interventricular septal thickness

Frequently asked questions

Is this the same as an echocardiogram?
This measurement is usually obtained during an echocardiogram. The echocardiogram provides a broader view of the heart's structure and function.
Does a thicker or thinner septum always mean heart disease?
No. Variations can occur with blood pressure, athletic conditioning, and other heart conditions, so the finding must be considered with the complete ultrasound and clinical picture.
Is the test painful or risky?
No. It is a non-invasive ultrasound that does not use radiation and generally causes no pain or significant risk.
  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 17, 2026. · Read our editorial policy