Ivsthicknesssys2dus
A cardiac ultrasound test that measures the thickness of the wall between the heart's two ventricles during heart contraction.
{"Measures the thickness of the heart wall (septum) between the left and right ventricles during contraction","Helps diagnose conditions like hypertrophic cardiomyopathy and assess heart wall abnormalities","Non-invasive ultrasound test with no radiation exposure","Normal thickness typically ranges from 6-11 mm","Abnormal results may indicate heart disease or damage"}
Key facts at a glance
- LOINC
- 29432-2
- Short code
- IVS Sys
- Synonyms
- IVS Thickness sys 2D US
- Category
- cardiac
- Sample
- serum
- Container
- N/A - Imaging study, not a blood test
- Units
- N/A
- Ref low
- 0.6
- Ref high
- 1.1
- Critical range
- — – 2 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 18 years
- Method
- 2D Echocardiography / Transthoracic Ultrasound
- CPT
- 93307
- SNOMED
- 39972009
- Specimen volume
- N/A - Non-invasive ultrasound imaging
- Stability
- N/A - Imaging study
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 1–24 hours
- Order
- routine
What is this test?
The Interventricular Septum Thickness During Systole test is a cardiac ultrasound (echocardiogram) measurement that captures the thickness of the wall (septum) between the heart's two lower chambers (ventricles) when the heart contracts (systole). This 2D ultrasound creates detailed images of the heart's structure, allowing doctors to assess the septal wall's size and function.
During each heartbeat, the ventricles squeeze to pump blood out to the body. This test specifically measures how thick the septal wall becomes at the point of maximum contraction. The sonographer will apply gel to your chest and use a transducer to send sound waves through your heart, creating moving images on a monitor.
Reference range
Normal interventricular septum thickness during systole ranges from 0.6 to 1.1 cm. Values may vary based on age, sex, and body surface area. Left ventricular hypertrophy is typically diagnosed when septal thickness exceeds 1.2 cm in adults.N/A
No specific preparation required. Patient should avoid caffeine and smoking for 4-6 hours prior to the study as these can affect heart rate. Wear comfortable, loose-fitting clothing that allows easy access to the chest area. Continue taking prescribed medications unless instructed otherwise by the referring physician.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
Is the test painful?
How long does the test take?
Do I need to fast before the test?
What do abnormal results mean?
Are there any risks?
Sources
- 1
- 2
- 3
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.
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